# economics

posted by
**ammu**
.

Assuming the inverse demand function for good Z can be written as P = 90 - 3Q, when Q is equal to 5, average revenue and marginal revenue are equal to ________ and ________.

Choose one answer.

a. $75; $75.

b. $75; $60.

c. $60; $60.

d. $85; $85.