Question

I really need some help please! My time on this test is almost up and I have no clue on these question...



1.) Let f(x) = x + 2 and g(x) = x2 Find ( g o f)(-5)
A. -3
B. 9
C. -10
D. 49

2.) What is the inverse of the given function?
y = 3x + 9

A. y=3x+3
B. y = 1/3x + 3
C. y= 3x-3
D. y=1/3x-3 <----------I think the answer is D?

3.) For the function f(x) = x + 9, find (f o f-1)(5)

A. 5 <----------I think the answer is A
B. -5
C. 25
D. 14

4.) For the function f(x) = x2 - 12, find (f o f-1)(4)
A. 6
B. 4
C. 10
D. 0

Answer 1

why do they still allow open online tests?

theres no point of assessing a students progress, if they can cheat or get help

Answer 2

you shouldve left out the test part

Answer 3

I'm asking for help not for someone to give me the answer! I think I have 2 of the correct answer just need them doubled checked...

Answer 4

are u in connections?

Answer 5

Nope--not sure what that it? #Here_to_Help15