The number x of bicycle helmets people are willing to buy per week from a retail chain at a price of $p is given by
x = 1,000 - 60ˆšp + 25 20 ‰¤ p ‰¤ 100
(see the figure).

(A) Find dx/dp.
(B) Find the demand and the instantaneous rate of change of demand with respect to price when the price is $75. Write a brief interpretation of these results.

Transcribed Image Text:

800 ,-1.000-60Yp + 25 600 6叶 200 SOvp 25 400 20 40 60 80 100 Price (dollars) Figure for 93 and 94