MATH PLEASEEEEE
posted by Jamie Lynn .
I have a question, if f(x)=x/2 and g(x)=3x+1 find:
a) (f+g)(x) i know you go x/2+3x+1.
but how do i solve that??
b) (fg)(x) i know you go x/23x+1,
how do i solve?
c)(f*g)(x) how do i solve?
(f/g)(x) how do i solve??
f(g(x)) how do i solve??
thanks for your itmeee

MATH PLEASEEEEE 
Reiny
for (f+g)(x) you would add up your two function expressions and simplify them
so (f+g)(x) = x/2 + 3x+1
= x/2 + (6x+2)/2 = (7x+2)/2
which is not what you have
suppose we use x=4
f(4)= 4/2 =2
g(4) = 13
so (f+g)(4) = 15
in my (f+g)(x) = (7x+2)/2
(f+g)(4) = (7(4)+2)/2 = 15
for (fg)(x) you would subtract the two functions,
for (f*g)(x) you would multiply them, etc
test your answers in a similar way to the one I showed you 
MATH PLEASEEEEE 
Jamie Lynn
thanks so much:)
Respond to this Question
Similar Questions

Math
I just don't understand this question: h(t)=A*b^x h(3)=4 h(5)=40 Solve for b Would you plug 3 into the x and set it equal to 4? 
Math
HOW WOULD I SOLVE SOMETHING LIKE THIS, IT IS AN EXAMPLE I MADE UP. ITS SIMILAR TO THE ONE I HAVE. I DON'T GET IT. THERE ARE TWO UNKNOW VARILABLES AND SOME NUMBERS. HOW DO I POSSIBLE SOLVE THIS. MAYBE I DON'T HAVE TO SOLVE ANYTHING … 
math
actually, in a addition to the question i posted a few minutes ago, can someone please help me with a few actual specific questions? 
algebra
Solve the indicated variable: 1. Volume of a cone: solve for h: V=¨ir^2h/3 2. Temperature formula: solve for C: F=9/5C+32 pleaseeeee help me solve these! plzzz! i have nooo idea how to do these. THANKS! =))) 
Algebra
Question 1 Solve using the multiplication principle then graph. 15>75 Question 2 Translate to an equality. Use the variable x. The number of people in the chess clubi less than or equal to 15. Question 3 Solve using the addition … 
math (college algebra)
Ok I have two questions I have NO CLUE how to complete on my homework. Please help ASAP! (1) Solve the formula for the specified variable r = vx for r (the question is) v = ? 
algebra II
Thank you for your prompt response. I have my homework I have to turn in in about 2 hours, but i am struggling to solve this question. Is there any way you can just give me the answer while I find a website that can show me step by … 
Algebra
Removing factor of 1: 4z2y/6z explain how to solve this pleaseeeee 
Math
We have an important chemsitry test due and I want to make sure that I do not mess up on my algebra. I am dealing with the integrated rate law, but my question is purely algebraically in nature. I hope, somebody can help me. 1) ln(A) … 
geometry
line BD bisects angle ABC. Solve for X and find the measures of angle ABC. angle ABD= 5X, angle DBC= 3X + 10 I don't really understand this question so can someone please help me solve this and explain to me how they solved it/ show …