Question

The demand for concert tickets depends on the price per ticket. Thus, the demand is a function of the price. If this function is called D(p), use the formula below to compute D(15), the demand for tickets when the price is $15.
D(p)=2115-2p-p^2
A. D(15)=1120
B. D(15)=2115-225
C. D(15)=2115-60
D. D(15)=2115-255

(Please help)

Answer 1

d

Answer 2

D(p) = 2115 - 2p - p^2
D(15) = 2115 - 2(15) - 15^2 {substituted 15 in for p}
D(15) = 2115 - 30 - 225
D(15) = 2115 - 255 {combined -30 and -225}
Answer is: C

Answer 3

so C or D?