Question

Let f(x) = 2x + 2. Solve f^−1(x) when x = 4.

1
3
4
10

Answer 1

i need an explanation, i'm really bad at this lol

Answer 2

this is exactly the same as being asked:
"solve for \(x\) if \(2x+2=4\)"

Answer 3

it is just worded funny is all

Answer 4

thats the inverse?

Answer 5

so x=1?

Answer 6

no one but a math teacher writes "solve for \(f^{-1}(x)\) if \(x=4\)
must more natural to say "find \(f^{-1}(4)\)

Answer 7

yes

Answer 8

oo ok, can you help me with another to make sure i get it?

Answer 9

if \[f(x)=2x+2\] then \[f(1)=4\] so \[f^{-1}(4)=1\]

Answer 10

sure

Answer 11

Let f(x) = 2x − 6. Solve f−1(x) when x = 2.

−5
4
−2
7

Answer 12

ok so, it would be
2x-6=2

Answer 13

yes

Answer 14

and x=4

Answer 15

yes

Answer 16

thank you soooo much!

Answer 17

yw, you did almost all the work!

Answer 18

i have a couple more but ill post in another question

Answer 19

k