college Algebra

posted by .

1) Solve the following by factoring:

a)

Answer:
Show your work here:


b)

Answer:
Show your work here:



2) If , find

a) f(2)

Answer:
Show your work here:


b) f(-1)
Answer:
Show your work here:


3) Solve 6x2 + 3x – 18 = 0 using the quadratic formula.
Read the information in the assignment list to learn more about how to type math symbols, such as the square root.

Answer:
Show your work here:


4) Use the graph of y = x2 + 4x - 5 to answer the following:


a) Without solving the equation or factoring, determine the solution(s) to the equation, , using only the graph.

Answer:
Explain how you obtained your answer(s) by looking at the graph:

b) Does this function have a maximum or a minimum?

Answer:
Explain how you obtained your answer by looking at the graph:

c) What are the coordinates of the vertex in (x, y) form?
Answer:

d) What is the equation of the line of symmetry for this graph?

Answer:

5)
a) Calculate the value of the discriminant of .

Answer:
Show your work here:

b) By examining the sign of the discriminant in part a, how many x-intercepts would the graph of have? Why?

Answer:


6) a) Find the corresponding y values for x = -4, -3, -2, -1, 0, 1, 2 if .


Answer (fill in y column)
x y
- 4
- 3
- 2
- 1
0
1
2

Show your work here: (type x-squared as x^2 unless using a superscript feature).



b) Use Microsoft Excel to plot the points found in part a and to sketch the graph.
Read the information in the assignment list to learn more about how to graph in MS Excel.

Graph:

7) The path of a falling object is given by the function where represents the initial velocity in ft/sec and represents the initial height. The variable t is time in seconds, and s is the height of the object in feet.

a) If a rock is thrown upward with an initial velocity of 32 feet per second from the top of a 40-foot building, write the height equation using this information.

Typing hint: Type t-squared as t^2.

Answer:

b) How high is the rock after 0.5 seconds? Show all work.

Answer:
Show your work here:


c) After how many seconds will the rock reach maximum height? Show all work.

Answer:
Show your work here:


d) What is the maximum height? Show all work.

Answer:
Show your work here:

  • college Algebra -

    There is no question here

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. College Algebra

    These are the points on the graph! O year = $41000 1 year = $43000 2 year = $46000 3 year = $48500 The following graph shows Bob’s salary from the year 2002 to the year 2005. He was hired in the year 2002; therefore t = 0 represents …
  2. math

    Solve the following algebraically. Trial and error is not an appropriate method of solution. You must show all of your work and write answers in rational form. 3 x + 7 = 9 Answer: x = 2/3 Show your work here: 3 x + 7 = 9 -7 - 7 3/3 …
  3. 6th grade

    I need to balance the equation and show my work. Ex. N - 2.4 = 5 +2.4 = +2.4 ----------- N = 7.4 How would I show my work for: 2.3 + 4.09 = N I know the answer is 6.39 because I add 2.3 and 4.09 but how do I show the work?
  4. College Math II

    x/x – 1 - 3/x = 1/4 My problem says to show the work and to solve the equation. I am not sure how to use the steps to show my work and answer the problem. Thanks.
  5. math133

    ) Solve algebraically and check your potential solutions: sqrtx+2+0 Answer: Show your work here: 3) The volume of a cube is given by V = s3, where s is the length of a side. Find the length of a side of a cube if the volume is 800 …
  6. 6th grade math

    Find the value fir each expression. Show your work. (13.28 - 7.8) divided by 4. I have the answer in the back of my book and when I try to work the problem out I keep getting the wrong answer. The answer is supposed to be 1.345 I can …
  7. algebra

    If trend for the depreciation of the press continued, what would be its value in the year 2015?
  8. college algebra

    What is the answers and break down of them, Typing hint: Type x 2 as x^2 (shift 6 on the keyboard will give ^) 1) Solve the following quadratic equation by factoring: a) 7 010 2 xx =++ Answers: Show your work here: b) Solve the quadratic …
  9. Algebra

    Doing a slope project in Algebra. The instructions are to make a picture And label coordinates points.. You have to show a negative slope. A verticle slope, an undefined slope, And a positive slope. Here is my problem. I have to write …
  10. algebra

    Determine the length of the missing side of each right triangle. Show your work. 1)a=15; b=?

More Similar Questions