To evaluate the function f(x) when the output value is 8, we need to solve for the input value x:
f(x) = 40/(5x - 1) = 8
Multiplying both sides by (5x - 1), we get:
40 = 8(5x - 1)
Simplifying the right side, we get:
40 = 40x - 8
Adding 8 to both sides, we get:
48 = 40x
Dividing both sides by 40, we get:
x = 48/40 = 1.2
Therefore, the input value x that corresponds to an output value of 8 is x = 1.2.