Question

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

f(3) when f(x) = 2x + 2
f−1(4) when f(x) = 3x minus 4, all over 5
y + 10 = 2y + 1

Answer 1

@3mar

Answer 2

u put da 3 in da x n den u solvsiez 4 deh problum

Answer 3

lol

Answer 4

tf r u laughing about goNAD?

Answer 5

my name is nadalie tyvm

Answer 6

this isn't really helpful...

Answer 7

more like gonads

Answer 8

@asdiaasd
f(3) = 2(3) + 2
=?

Answer 9

Well, I am here.

Answer 10

I need help with the second equation

Answer 11

okay f^-1(4) means f inverve function with input of 4

Answer 12

f(x)=(3x-4)/5
what is x if f(x) = 4

Answer 13

4?

Answer 14

no solve for x

Answer 15

f(x)=(3x-4)/5
4=(3x-4)/5
20=3x-4, ill lte u continue

Answer 16

this is what I got
f^-1(4) when f(x)= 3x-4 all over 5
f(x)= 3x-4 all over 5
To find f^-1(x) just swap the variables to solve for x:
y= 3x-4 all over 5
swap variables:
x= 3y-4 all over 5
solve for x
5x=3y-4
5x+4= 3y
y= 5x+4 all over 3
f^-1(x)= 5x+4 all over 3
5*4= 20
20+4= 24
24/3= 8

Answer 17

yup

Answer 18

You deserve it!

Answer 19

f(x)=(3x-4)/5
4=(3x-4)/5
20=3x-4,
24/3=x
8=x

Answer 20

remember what inverse functions are doingq

Answer 21

okay I think I understand now
I answered this question thanks

Answer 22

okay
think about this statement
f^-1(4)
you are asking your self what is x so that y is 4

f(4)
what is y when x is 4

Answer 23

this way u can avoid having to find inverse functions when its not necessary