What would the profit from sales be if the price of the t-shirts were $15 a piece?

B. 28

Step-by-step explanation:

p(x) = -2(x-9)^2 + 100

Substitute 15 for x.

p(x) = -2(15-9)^2 + 100

      = -2(6)^2 + 100

      = -2(36) + 100

      = -72+100

      = 28

Hope this helps.

69

step-by-step explanation:

< 4, -5>

step-by-step explanation:

starting from g. we move 4 right and then 5 down to get to h. that means the vector is < 4, -5>