A store has determined that the number of Blu-ray movies sold monthly is approximately

n(x) = 6750(0.929^x) movies

where x is the average price in dollars.

(a) Write the function for the model giving revenue in dollars, where x is the average price in dollars.

R(x) =

dollars

(b) If each movie costs the store $10.00, write the function for the model that gives profit in dollars, where x is the average price in dollars.

P(x) =

dollars

(c) Complete the table. (Round your answers to three decimal places.)Rates of Change of Revenue and Profit

Price	Rate of change of revenue (dollars per dollar)	Rate of change of profit (dollars per dollar)
$13
$14
$20
$21
$22