Question

Use the function to answer the question.
f(x) = 10x - 5
What is the value of f^–1 (–4)? (Points : 4)
-45
-35
0.01
0.1

Answer 1

Best way is just take the function's name called 10x - 5 and set it to -4.

Reason is beacuse you want the value of the inverse function.

Answer 2

I agree with easy, any more info would hand you the answer

Answer 3

So would it be the 2nd one...?

Answer 4

what is 10(-4) -5 ?

Answer 5

-35 right...?

Answer 6

Ehuman...you dont evaluate 10x - 5 at x = 4, I said take 10x - 5 = 4.

Answer 7

what is 10*-4?

Answer 8

-40

Answer 9

i never said that he needs to evaluate the function at x =-4

Answer 10

what is -40 - 5?

Answer 11

-45.... OH

Answer 12

You are all making an error. You want the INVERSE at - 4, you do NOT want the value of the actual function at x = -4.

Answer 13

AHHH!!!! SO CONFUSED!! XD

Answer 14

oh my bad, cart before the horse, 2 lashings with a wet noodle, walking away from the pc for a while lol.

Answer 15

listen to easy's first advise

Answer 16

10x - 5 = -4 solve

Answer 17

10x - 5 - -4
10x = 1
x = 1/10 or 0.1