Question

Given the function f(x) = The quantity of 2x minus 5, divided by 3, which of the below expressions is correct?

a. f−1(x) = The quantity of 5 minus 2x, divided by 3. f−1(x) =
b. The quantity of 3x minus 5, divided by 2. f−1(x) =
c. The quantity of 3x plus 5, divided by 2. f−1(x) =
d. The quantity of negative 2x minus 5, divided by 3.

Answer 1

f(x) = (2x - 5)/3
3f(x) = 2x - 5
2x = 3f(x) + 5
x = (3f(x) + 5)/2

Therefore, f^-1(x) = (3x + 5)/2

The correct answer is option c.