Question

1. For the f(x) = 5x + 8 and g(x) = x – 3. Calculate (f o g)(x)

Answer 1

(f o g)(x) means f(g(x))
so,
(f o g)(x) = f(g(x)) = f( x – 3) = ? u wanna try this step? plug in (x-3) everywhere you see the 'x' term in the f(x) function of 5x+8

Answer 2

I came up with 23

Answer 3

(f o g)(x) =
= f(g(x))
= f( x – 3)
= 5(x-3)+8
= 5x-5(3) + 8
= 5x - 7

Answer 4

thank you!!!!!!!

Answer 5

can you help me on this 1 to? 2.

Consider the function. F(x) = (1/5)x - 4
a.) Find the inverse of f(x) and name it g(x). Show and explain your work.

Answer 6

ur welcome ^_^

Answer 7

to find an inverse means to
rename F(x) to y
then
swap places of x and y,
then
solve for y
then rename y to g(x)

Answer 8

ok im about to try it out

Answer 9

u can do it!! ^_^ haha

Answer 10

im stuck on this problem. I came up with y= (5/1) but I don't think that's right

Answer 11

F(x) = (1/5)x - 4
y = (1/5)x - 4
x = (1/5)y - 4
x+4 = (1/5)y
5(x+4)=y
y = 5x + 20