Question

I award metals! I have a question and i have the answers for it but I just need someone to double check them for me please.

Answer 1

what's your question as well as your answer? :)

Answer 2

Which of the following statements have the same result? Explain each step in solving each one.

I.f(3) when f(x) = 2x + 2
II.f-1(4) when f(x) = (3x-4)/5
III.y + 10 = 2y + 1

Answer 3

my answer is: I. f(3)=2x+2
f(3)=2(3)+2
f(3)=6+2
f(3)=8
f(x)=8
II.F(X)=(3x-4)/5
f(x)=[3(4)-4]/5
f(x)=(12-4)/5
f(x)=8/5
f(x)=5 times 8/5 + 4
f(x)=8 + 4
f(x)=12
III.y+10=2y+1

Answer 4

For the last one I got 9. But then none of them are the same so I want to know if I am right about htem being different or what.

Answer 5

(II) is asking you inverse?

Answer 6

yeah

Answer 7

I don't know if I did II right. Inverse always gets me

Answer 8

Since I got no time, I'll not guide you to the answer.


I. f(3)=2(3)+2=8

II. f(x)=(3x-4)/5
x=[3f^-1(x)-4]/5
5x=3f^-1(x)-4
5x+4=3f^-1(x)
f^-1(x)=(5x+4)/3
f^-1(4)=[5(4)+4]/3=8

III.y+10=2y+1 --> y=9


Therefore I and II.

Answer 9

Oh okay! Thank you!! That makes more sense than what I did. Thanks again!

Answer 10

no problem :)