Answer:
B. f⁻¹(x) = 3 - 5x
Step-by-step explanation:
f(x) = (3 - x)/5
Replace f(x) with y.
y = (3 - x)/5
Switch the variables.
x = (3 - y)/5
Multiply both sides by 5.
5x = 3 - y
Subtract 3 from both sides.
5x - 3 = -y
Multiply both sides by -1.
y = -5x + 3
Apply commutative property.
y = 3 - 5x
Replace y with f⁻¹(x).
f⁻¹(x) = 3 - 5x.
