HELP!

PART A

The revenue from the sale of a product is, in dollars,

R = 1500x + 3000(4x + 3)¹ 1000

where x is the number of units sold. Find the marginal revenue when 150 units are sold. (Round your answer to two decimal places.) $= Interpret your result. If the sales go from 150 units sold to ( Answer ) units sold, the revenue will increase by about $ =

PART B

The revenue in dollars from the sale of x units of a product is represented by the following formula. (Round your answers to the nearest whole number.)

R = 20(5x + 1)¹ + 90x 17 Find he marginal revenue when 50 units are sold.

$= Interpret your result.

If the sales go from 50 units sold to (Answer) units sold, the revenue will increase by about $=

PART C

Suppose that the weekly sales volume y (in thousands of units sold) depends on the price per unit (in dollars) of the product according to the following formula.

y = 30(3p + 1)^2/5, p > 0

(a) What is the rate of change in sales volume when the price is $21? (Round your answer to three decimal places.)

dy/dp=

(b) Interpret your answer to part

(a). (Round your answer to the nearest whole number.)

If the price increases $1, the sales volume will decrease by (Answer) untis