Question

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

Answer 1

@_lilb_to_smooth_4_U_

Answer 2

replace 4 with x so it looks like f(x)=2(4)+2

Answer 3

so the answer is 10? can u help me re word 5 more problems like this?:)

Answer 4

sure and are there answer choices or are you doing all these like that

Answer 5

1) Let f(x) = x - 2 and g(x) = x2 - 7x - 9. Find f(g(-1)).
2) Let f(x) = x + 8 and g(x) = x2 - 6x - 7. Find f(g(2)).
3) Let f(x) = 12 over the quantity of 4 x + 2. Find f(-1).
4) Let f(x) = x2 - 3x - 7. Find f(-3).
5) Let f(x) = 7x - 13. Find f-1(x).

Answer 6

@ftflyingtiger
can u just re word them like u did in the above problem please:)

Answer 7

@meghana333666999

Answer 8

@emmigrace222

Answer 9

1) Let f(x) = x - 2 and g(x) = x2 - 7x - 9. Find f(g(-1)).
There ask for f (x^2-7x-9)(-1)

Answer 10

all you are doing is plugging in so if they asked g(f(1) you would multiply g by what f is

Answer 11

im still confused:(

Answer 12

if this is your question

Let \(f(x) = 2x + 2\). Solve \(f^{-1}(x)\) when \(x = 4\).

then the answer is 1 since \(f(1)=2\cdot 1+2=4\)