Question

Use the function to answer the qustion.
f(x) = 5x - 10
what is the value of f-1 (-3) ?

Answer 1

find the inverse of the function...

Answer 2

A: 9.4
B: 1.4
C: -5
D: -25

Answer 3

answer is 7/5

Answer 4

here y=5x-10 or x=(10+y)/5 hence the reqd answer is (-3+10)/5=7/5=1.4

Answer 5

@akash123 what?

Answer 6

answer is 7/5 = 1.4

Answer 7

there is an easier way out, just put f(x)= -3 and find x
-3 = 5x-10
x=?