The function p(x) = –2(x – 9)2 + 100 is used to determine the profit on T-shirts sold for x dollars. What would the profit from sales be if the price of the T-shirts were $15 apiece?
Simple.....
plug n chug!
p(x)=\(-2(x-9)^{2} +100\)
p(15)= \(-2(15-9)^{2} +100\)
p(15)= \(-2(6)^{2} +100\)
p(15)= \(-2(36)+100\)
p(15)= -72+100
p(15)= 28
28..there was a profit.
Thus, your answer.