# Pre-Calc

850 results
1. ## math

Hi, How do I improve my math skills? I can't calculate in my head (I.e 2x43), I would actually have to write it down to solve it. I took pre-calc, calc and didn't have problem understanding. I don't know what is wrong. what should I do?

asked by john on February 27, 2015
2. ## Math

Please someone help with my pre calc question!

asked by Anthony on February 12, 2013
3. ## math

One of the following functions is neither odd nor even. Which one? x^5 + 3x 6x^2 – |x^2| + 3 x^9 + 3x^7 + 6x (my answer)x^2 + 3x + 3 + |x –3| This is really tricky pre-calc graphing problem. Thanks for the help!

asked by Anonymous on October 1, 2012
4. ## Delete

Is it possible to have this question removed? Thanks so much! :) Subject: Pre-Calc Date: Saturday October 4, 2014 Time: 10:27am

asked by Tori on October 5, 2014
5. ## Pre-Calc

Can you show me how to find the rectangular equation of r=2costheta + 3 sin theta All I need is an example to work off I was absent today from Pre-Calc and I have homework to do and no explanation with them-Please help with this one Thank you

asked by Leah on October 3, 2011
6. ## Pre-Calc

I'm stuck on a pre-calc problem. I need to find y as a function of x, where the constant c is a positive number for In(y-1)+In(y+1)= -x+c express your question as ln[(y-1)(y+1)] = -x+c change that to exponential form e^(-x+c) = (y-1)(y+1) e^(-x+c) = y^2 -

asked by Sarah on May 9, 2007
7. ## PLZ HELP MATH

this is pre calc arithmetic sequence. AT sea lvl pressure is 14.7 psi. It increases by 14.7 at every 30 ft descent. What is pressure at 1000 ft.

asked by ISOSMEXY on February 14, 2016
8. ## Pre-Calculus

Can you show me how to find the rectangular equation: r=2cos(theta) + 3 sin (theta) All I need is an example to work off I was absent today from Pre-Calc and I have homework to do and no explanation with them-Please help with this one Thank you

asked by Leah on October 3, 2011
9. ## MATHS

A CONE WAS CONSTRACTED FROM PLASTIC, HAVE A HEIGHT OF 20cm (PART C). THE LID IS MADE UP OF HEMISPHERE HAVE RADIUS 0F 5cm (PART A) AND PYRAMID HAVE VOLUME OF 81,667cm³. THE LID FITS EXACTLY OVER THE CONE. A) CALC. THE VOL. OF PART A. B) CALC. THE VOL. OF

asked by MTHOMBENI BAFANA on August 9, 2010
10. ## calculus (limits)

lim h>0 sqrt(1+h)-1/h not sure how to factor this; not allowed to use L'Hopital's Rule. (that isn't taught at my school until Calc II & I'm in Calc I).

asked by John on January 22, 2011
11. ## Pre Calc To Reiny - Follow up on Pre-Calc Answer

Pre-Calc - Follow-up for Reiny - MUFFY, Saturday, October 3, 2009 at 10:27pm I wasn't sure if you would notice my question since it is so much later so I re-sent this as a new question. Please let me know if I shouldn't do that. I understand how you got a

asked by MUFFY on October 4, 2009
12. ## Pre-Calc

This is the last question on my pre-calc homework, I looked through the textbook and have no idea how to do this. Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round

asked by Cat Jones on March 6, 2015
13. ## AP Physics 1

This isnt exactly a hw question... but for anyone who knows: Im considering to take AP Physics next year as a challenge. I'm going to be taking pre-calc next year ( i already took my algebras) and im not too great in math but im good at memorizing and

asked by gallant on April 2, 2017
14. ## help chem!:/

a) Calc. PH of 0.010 M HF and 0.030 M KF e) calc. PH Zn(OH)2 in wAter

asked by ALISON on March 16, 2012
15. ## Managerial finance

Your company contemplates buying a computer based inventory management system for 200 000. It will depreciated on a straight line basis to zero over its 4 year life span, when it will be sold for 30 000. the system will save the firm 60 000 pre-tax (EBIT)

asked by Shay on August 7, 2018
16. ## precalc

I'm terrible at pre calc, could someone tell me if the solution set for log subscript 2 x + log sub 2 (x-1)=1 is the solution -1? Using either the elimination or substitution method is the solution set for 4x + y =11 and 2x -y = 7 is the answer (3, -1)?

asked by eragon on January 13, 2007
17. ## C code

Write a .c file named calc that: - Takes arguments from the command line - Solves a simple math problem - Returns the result as an exit status calc.c: //this is the function that gets called when the executable is run. int main(int argc, char * argv[]){

asked by Nick on February 7, 2013
18. ## Studying for Calc

I have a quiz on derivatives coming up and I really want to do well, but i'm not sure how to go about studying calc. i have no trouble studying for other subjects, but i'm doing poorly in calc and i need to make some changes in my study habits. any

asked by Elizabeth on October 7, 2008
19. ## Math

If (a,-3) is a point on the graph of y=x^2+4x, what is the value of a? so far i have -3=x^2+4x i can do the problem on my graphing calc but we can't use a graphing calc on the test so i need to know how to do it by hand. what do i do next?

asked by Karen on January 21, 2010
20. ## Math

Math 10 pre calc chpt 1 In a basement renovation, the contractor measured the length of a wall in a square room as 18ft.4in. The width of the doorway is 3 ft. The contractor plans to place wood trim along the bottom of each wall. The trim costs 1.69/ft.

asked by 1 on July 5, 2018
21. ## Calc

Profit=p(-p^2+33p+9)-9(-p^2+33p+9)+100 How do I simplify this so I can take the derivative For Further Reading * Calc - Michael, Sunday, November 25, 2007 at 4:17pm Profit=p(-p^2+33p+9)-9(-p^2+33p+9)+100 p(-p^2 + 33p + 9) Just distribute the p in. -9(-p^2

asked by Ben on November 26, 2007
22. ## Physics

1, A Body Of Mass 6kg Was Acted Upon By A Constant Force Of 18N. Calc Its Velocity In 5sec. 2. A Car Moving At 108km/hr Was Gradually Brought To Rest By Constant Force Of 2500N After 8sec. Calc The Decelleratio

asked by Jane on July 12, 2016
23. ## physics -damon help

An ac source of 50v,100÷πHz is connected in series with an inductor of inductance L ad a resistor of resistance R.the current in the circuit is 2A ad p.d. across L and R are 30v ad 40v respectively 1) calc d average power dissipated 2) calc d power

asked by maths on November 3, 2016
24. ## math

i need some serious help with limits in pre-calc. here are a few questions that i really do not understand. 1. Evaluate: lim (3x^3-2x^2+5) x--> -1 2. Evaluate: lim [ln(4x+1) x-->2 3. Evaluate: lim[cos(pi x/3)] x-->2 4. Evaluate: lim x^2+x-6/x^2-9 x--> -3

asked by Dani on July 13, 2010
25. ## chemistry

liquid heptane C7H16 is completely combusted to produce CO2 and H2O: C7H16 + 11O2 --> 7CO2 + 8H2O the heat combustion for one mole of C7H16 is -4.85*10^-3 CO2 heat of comb. = -393.5 H2O h of c= -285.8 a) calc. the vale of heat of cumbustion for C7H16 in

asked by hilde on March 11, 2010
26. ## Pre Calc

I already asked this question and had some help, but I am still confused on a piece of it. I'm not sure what differentiate is. I understand how you got a and b, but I am confused with c. What is differentiate and how did you get the equation dA/dx = 72 -

asked by MUFFY on October 6, 2009
27. ## I have a question concerning Spring Semester

Im a freshman in college and I just took Chem1, Trig, and Drama (12units). I am planning on taking Chem2, Pre-Calc, and Art1 for spring sem. (13units). I'm not sure if this is too much to take for next semester considering two five unit classes or should I

asked by L.Bianchessi on December 23, 2011
28. ## math

In a survey to determine the opinions of Americans on health insurers, 400 baby boomers and 600 pre-boomers were asked this question: Do you believe that insurers are very responsible for high health costs? Of the baby boomers, 232 answered in the

asked by Rahat on June 23, 2017
29. ## Chemisrt

What is pre-exponential factor for diffusion, because i have a problem with this equation. D=D0*exp[-Ea/R*T] where D=2*10^-13 Ea=2.9*10^-19 joules/atom T=1009 K How to find the pre-exponential ?

asked by Musaka on July 27, 2014
30. ## english

is pre-analyzed a word? We have pre-analyzed how they would end up if they think they are in love from comparing to Tom and Daisy.

asked by sam on August 24, 2011
31. ## Pre-cal

Hi, I don't understand this problem also. Find the the relative maximmum and minimum of x^3 - 6x^2 + 15. I'm supposed to do it using a graphing calculator but I still don't see any "lows" or "highs". Relative max and mins will occur when the derivative is

asked by Lisa on February 17, 2007
32. ## english

Hi. I know this might be kind of a stupid question, but I was wondering if a predecessor follows something or is before it? I thought it was after, but the dictionary definition makes it seem like it is before. Is it before because of the pre? Thank you

asked by Melvin on April 22, 2007
33. ## Algebra

I have a few questions on my Pre- Algebra Pre- test. I am in 7th grade. Anyone willing to help me for a few questions for 5-10 minutes?

asked by Rebecca on June 7, 2015
34. ## physics

an aeroplane is travelling horizontally at a speed of 80ms and drops a crate of emergency supplies.To avoid damage,the max vertical speed of the crate on landing is 20ms. a)calc d max height of the aeroplane when the crate is dropped b)calc d time taken

asked by Shanti on January 19, 2012
35. ## education

I'm doing a power point on pre-k classroom. I need help finding a classroom arragment picture. Like how the room needs to be set up before a pre-k room open. I hope this makes sense.

asked by Sueann on December 12, 2009
36. ## Pre-Calculus

Use the CALC features of the TI to answer the following. Show what you put into the calculator & what CALC feature you used. Round to the nearest tenths. The equation h = 20 cos (π/4 (t-3)) + 23 tells how high above the ground a ferris wheel car is at any

asked by Clarice on October 29, 2015
37. ## Math

darry and nay eat dinner at a restaurant with 6% sales tax. They leave an 18% tip on the pre tax amount of the bill. If they paid a total of 37.20, what was their pre tax bill?

asked by Darryl on January 5, 2017
38. ## Statistics

In Professor White’s statistics course the correlation between the students’ total scores before the final examination and their final examination scores is r = 0.9. The pre-exam totals for all students in the course have mean 275 and standard

asked by Kevin on October 22, 2012
39. ## pre-algebra

kk my teach told me to describe and draw things that are about pre-algebra and she told me to write what pre-algebra is... so can anyone help me??

asked by damainmind on August 26, 2008
40. ## Spanish

Answer the following questions what does pre viernes el pescado o el bonyo mean what does que co mis parlemis i duno mean? what does pre viernes la liche o el hugo mean in spanish? what does que te gusta comer parde e la guarso mean? I know some of these

asked by nothing on March 22, 2011
41. ## Chemistry

A .682 g sample of an unknown weak monoprotic acid, HA, was dissolved in sufficient water to make 50mL of solution and was titrated with a .135 M NaOH solution. After the addition of 10.6mL of base, a pH of 5.65 was recorded. The equivalence point was

asked by Sara on May 9, 2007
42. ## Chemistry

(A) is a solution of hcl (b)is a solution of koh titrate against b8 record your titre values as follows burretreading|rough|1stread|2ndread|3rdread/finalrding under rough|33.50|un der 1s rd |33.50|under 2nd rd |33.60| under3rd rd|33.70 intial rding under

asked by Kc luckydony on March 2, 2011
43. ## GOVERNMENT

Which group would be more likely to approve of a pre-emptive strike to rid the world of a terrorist friendly country (government)? Today, the Republicans seem to be more in favor of a pre-emptive strike -- but I think we may see a change because almost

asked by Suzanne on November 7, 2006
44. ## Need some ideas.... for a Pre-K class

I am teaching a Pre-K class this summer and the theme for the next two weeks is Community History. What could I all my pre-k class to do that connects to this theme? I thought of helping them to construct houses or certain buildings using boxes and also

asked by MARY on July 5, 2008

I need help with this one, please. Which of the following is in the solution set of the inequality –3 > –3t + 6? A. -1/3 B. 1/3 C. 4 D. -4 I did a Pre-Test for my lesson, and it says I got this one wrong. However, it doesn't say which one I picked. For

46. ## chemistry

This problem is from my chemistry book and I am having a little trouble with the intermediary steps: Barium metal crystallizes in a body- centered cubic lattice (atoms at lattice points only) The unit cell edge length is 502 pm, and the density of the

asked by Tokey on May 18, 2010
47. ## accounting

I am showing a \$8100 debit balance on prepaid insurance at the end of august. The pre-paid insurance was purchased in Feb. for 12 months. what should my adjusting entry to pre-paid insurance be for the month of Sept. which is the end of my fiscal year?

asked by lynn on July 15, 2010
48. ## Science 7R

Tomorrow I have a science test on circulatory system and is there a practice test THAT IS ON 7TH GRADE SCIENCE REGENTS LEVEL!?!? please i really want to do well on the test if take a pre-test thanks ;) btw --- i'm going over my notes for the test just that

asked by Laruen on May 15, 2012
49. ## Chemistry

Consider the data below Temperature (0C) Diffusivity (m2/s) 736 2 x 10-13 782 5 x 10-13 835 1.3 x 10-12 Given this data, determine the activation energy for the diffusion process (units of Joules per atom or molecule) in this material and the

asked by Musaka on July 27, 2014
50. ## child care

hi im doing my assignment in child care level 3 and i need to answer this question ,(describe ways that parents may participate in a pre school's activites to promote their children's learning and development) and (discuss how a pre school can encourage

asked by ella on April 23, 2009
51. ## statistics

Pre study scores versus post-study scores for a class of 120 college freshman english students were considerated. The residual plot for the least squares regression line showed no pattern. The least square regression line was y = 0.2 + 0.9x with a

asked by Gee on September 19, 2012
52. ## law-major help?

Hi, my friend and I both want to be lawyers. we finally talked after a long time of not seeing each other and we got on the topic of college. and majors. etc. i asked her what do u want to major in? she goes "history.. for LAw" i'm like you want to major

asked by Clarissa on November 6, 2008
53. ## Ms.Sue

Ms.Sue, do you know how to do calc?

asked by James on May 9, 2013
54. ## Precalc

if you have how do u do 2^2x - 2^x - 6 =0 (calc)how do u do it? using logs??

asked by Spencer on January 27, 2009
55. ## CDA

4. Signature software systems are primarily used by A. children and providers. B. parents and children. C. parents and other authorized individuals. D. parents and providers. 5. A software program features an electronic coloring book, in which children get

asked by Kaleisha on March 12, 2015
56. ## physics

A spring is manufactured with a pre-load. A force of 34.5 N compresses the spring by 1.5 cm. A force of 57.0 N stretches the same spring 0.03 m. Find the spring constant k (in N/m) and pre-load Fi (in N) that satisfies the linear equation describing this

asked by sai on July 31, 2017
57. ## Pre Calc (For Reiny)

Thanks so much your method worked perfectly! My solution was: the remaining zeros were 5+2i, 3, and -4 I have one question that's bugging me though, why is it that synthetic division did not work for me? I thought that long division and synthetic division

asked by Zach on November 15, 2009
58. ## Calc

Can someone help me with this calc problem? lim as x->0 (tan^3 (2x))/(x^3)

asked by Nick on January 8, 2009
59. ## Math

(1/25)^1/2 i know the answer is 0.02 but how do you find it in a fraction without using a calc?

asked by Allie on September 25, 2011
60. ## algebra 1

The Question Writing Commitee consists of seven volunteers from around the country who are amazingly dedicated to the Mathcounts program. This past weekend, was the last meeting for this particular group of question writers. Before the meeting, they are

asked by Tibby on January 31, 2008
61. ## English

Can someone explain to me what does pre released title essay test mean,i dont get it and in my assessment shows that i have pre released title essay test.Please someone tell me what is it.Thanks

asked by sam on September 20, 2017
62. ## Software Engineering

Consider the following program (written in pseudo-code) begin x:= 0; y:= 1; z:= 1; while y =0} Post: {sqrt2

asked by Jack on April 21, 2016
63. ## MATH

0.4771=x/2.303*8.14[50/323*373 calc.-x?

asked by tanya on May 28, 2015
64. ## maths

0.4771=x/2.303*8.14[50/323*373 calc.-x?

asked by tanya on May 28, 2015
65. ## physics

calc the buoyant force on a 2 L helium balloon

asked by chris on December 6, 2012
66. ## Precalc

how do u find the zeros of x^3+13x^2-16x+8? w/o a calc?

asked by Kate on October 30, 2008
67. ## math

How do i find X in e^(0.50/x) on a scientific calc? do I use LN, and if so, could you pls tell me how I can plug it in?

asked by sue on June 1, 2011
68. ## Chem

Can somebody check this for me?? Ksp AgCl 1.8x10^-10 Ag2CrO4 1.0x10^-12 AgI 1.0x10^-16 Ag3Po4 1.0x10^-16 1. calc the [Ag+] and [Cl-] at equivalence point. I got 1.3x10^-5 2. Calc. the [CrO4-2] required to precipitate AgCr04 if the [Ag+] equals the conc.

asked by Sara on May 10, 2007
69. ## Math - Chain Rule

I've been having some difficulities with this but I think I figured it out. Could you double check me and make sure I'm doing the correct steps? Differentiate and simplify the answer. f(x) = 2(3x+1)^4 (5x-3)^2 =2(3x+1)^4 [2(5x-3)(5)] + [8(3x+1)^3] (5x-3)^2

asked by becky on August 26, 2006
70. ## statistics

In 1980 (before the era of in-vitro fertilization), there were 3,612,258 births in the United States (according to the U.S. Census Bureau), of which 68,339 births were to twins and 1,337 births were to triplets or more. What was the probability of having

asked by f on June 19, 2013
71. ## techhelp ASAP

In Calc, mathematical equations are called __________. Averages?

asked by bigurl1.4 on October 26, 2013
72. ## critical thinking

Hi Everyone! Please post a substantive response to the following discussion questions by clicking on Reply: Euphemisms: seek to mute the disagreeable aspects of something or to emphasize its agreeable aspects Advertisers, even the media, will use

asked by Anonymous on July 19, 2012
73. ## consumer math

The Mannings file a tax return showing \$125000 in earned income, \$3288 from interest income, and they have a tax credit of 1% of their earned income. They claim 5 exemptions of \$2500 each, one head of household exemption of \$10500, pre-tax medical

asked by Megan on August 9, 2012
74. ## mass media

what are pre-book manuscripts and what is the early publishing houses? Pre-book manuscripts are the hand-written or typed (word-processed) pages of an author's books before it's been edited by the publisher. Check these sites for early publishing history.

asked by student on August 19, 2007
75. ## Calculus

Posted by CMM on Wednesday, October 13, 2010 at 12:50am. Calculate the following: a) Find g(f(1)) b) Find lim x-> 1+ g(f(x)) c) Find f(g(0)) d) Find lim x->0- f(g(x)) f(x)= 1-x, x1 g(x)= -x, x0 This is where it gets hard. I have a graph for f(x) and one

asked by CMM on October 13, 2010
76. ## calc

Use L’Hopital’s rule to find the limit of this sequence (n^100)/(e^n) ...If you do L'Hop. Rule it would take forever, right? You would always get an (e^n) at the bottom and will have to use the L'Hop. rule 100 times to find the limit...100*n^99,

asked by lola on February 1, 2012
77. ## Math HELPPP

In a survey of 2000 adults 50 years and older of whom 40% were retired and 60% were pre-retired, the following question was asked: Do you expect your income needs to vary from year to year in retirement? Of those who were retired, 33% answered no, and 67%

asked by Bill on October 16, 2012
78. ## algebra

Solve the equation Vx + 7 +5=9 a) -3 b) 9 c) 23 d) 16 V= real number root aka 2nd x2 on graphing calc

asked by john on March 18, 2008
79. ## Pre Calc

Does this: sqrt 3x-4=(x-4)^2-3 Multiply out to: x^4-16x^3+90^2-211x+173 I then need to put it in the graphing calc and see what the roots are.

asked by muffy on September 11, 2009
80. ## math

Solve the equation Vx + 7 +5=9 a) -3 b) 9 c) 23 d) 16 V= real number root aka 2nd x2 on graphing calc

asked by john on March 17, 2008
81. ## Question

@Alex asked this question when I was on earlier: Let line l_1 be the graph of 5x + 8y = -9. Line l_2 is perpendicular to line l_1 and passes through the point (10,10). If line l_2 is the graph of the equation y=mx +b, then find m+b. I'm wondering like how

asked by Yuuna on September 4, 2017
82. ## statistics

How do I sketch distributions? I think I'm doing it wrong. Is there an option my friends stats-calc(her calcultor is very tempremental, so i don't know if it'll work) I can utiilzie that'll sketch things for me? thanks. -Sketch a normal distribution with

asked by Gloria on January 30, 2008
83. ## CHEM!

Well I almost understand this question but still got stuck, I will show you the question and my answer so I need someone to tell me if I did it correctly or not and how I should fix it. at 55degrees the K for the reaction: 2NO2(g)N2O4 is 1.15 calc the

asked by Linda on May 2, 2007
84. ## Pre-K class needs your help

I noticed that someone posted this question before but I wanted to see if there were anymore ideas...... I am a pre-K teacher, as well, and my class will be doing a unit on Community History.... what activities and worksheets could I give my students

asked by LISA on July 11, 2008
85. ## math

ok so i havent done domain and ranges for a while so i need some help this is just a generic question but i want to make sure i know how to do them before starting calc so can someone please explain how i would heres a function f( t) = t+ 3 /(t2 – 5t –

asked by kieran on August 24, 2012
86. ## Chem

Prove by detail calc that glacial acetic acid is the excess and isopentyl alcohol is the limiting reagent

asked by Cocoa on September 9, 2010
87. ## alg

rationalize the denominator of the expression assume that all variables are positive ^3ã7/^3ã10 i cant get that sign on my pc its 2nd x2 on a graphing calc

asked by John on March 16, 2008
88. ## Calculus

Give the domain of each of the functions listed below : a) f(x)= ln (tanh^-1 (x)) b) g(x) = cos ^-1 (e^x) I just don't know how to set them up to solve for x ...I'm doing a Calc course online on my own, and would really appreciate the help :) Thanks

asked by Katie on May 13, 2011

Which of the following was the most significant development in the evolution of pre-historic Native American cultures? a. The development of fire based technology because it allowed prehistoric people to invent pottery. b. The development of agriculture

asked by Jaide on January 9, 2016
90. ## statistics

Pre- study scores versus post- study scores for a class of 120 college freshman english students were considerated. The residual plot for the least squares regression line showed no pattern. The least squares regression line was y^=0.2+0.9x withwith a

asked by Gee on September 13, 2012
91. ## algebra

V90x^26/V2x a) 3x^12 V5x bV18x^25 c) 5xV3x^12 d none of there *** the V is the real number root.. aka 2nd x2 on the graphing calc

asked by hokoslavia on March 17, 2008
92. ## Math

Express the following number in scientific notation: 23^941 How do i get the answer for this? on my graphing calc, i get an error overflow messasge when i try to compute it. THANK YOU!!!!!

asked by Sandy on March 12, 2012
93. ## childhood

it has been propsed that there is a tendency for parent to trat full term babies better than preterm babies a big reason is ? a. that a full term infants don't cry as much. b. that the behavior of pre term babes is more annoying and irratible c. that pre

asked by alisha on February 20, 2011
94. ## English

Identify the correct sentence. A. In order to assess you're level of improvement in the course, you need to take both the pre-test and the post-test. B. In order to assess your level of improvement in the course, you need to take both the pre-test and the

asked by Angela on April 30, 2014
95. ## What is discrete math? And is it relatively easy?

I ask because my TA recommended taking it next semester along with calc 3. My major is electrical engineering, and I might throw actuarial science into the mix too. So yeah, lots of math.

asked by Jake on December 19, 2007
96. ## statistics

Given the ensuing well drilling data, answer the following. [Reference: #4.78, page 172] • .30 (30%) probability of a productive well absent test information • Pre-drilling ballistics test ‘s affirmative result correctly predicts a productive well

asked by sophia on October 26, 2007
97. ## Math

Eight people are put into pairs and enter a room with a large table with four pairs of chairs (2 chairs and a lot of space then 2 more chairs and a lot of space and so on) Though they could sit anywhere they had to sit with there assigned partner. In How

asked by Elizabeth on January 31, 2008
98. ## Finite Math

Fifty percent of students enrolled in calculus class have previously taken pre-calculus. Thirty percent of these students received an A for the calculus class, whereas twenty percent of the other students received an A for calculus. Find the probability

asked by Nikole on June 10, 2015