Final answer:
The value of x that makes f(x)=57 is x = 8.
Step-by-step explanation:
To find the value of x that makes f(x) = 57 for the function f(x) = 8x – 7, we can set the equation equal to 57 and solve for x.
8x – 7 = 57
Adding 7 to both sides, we get:
8x = 64
Dividing both sides by 8, we get:
x = 8