Kasey creates comedy sketch videos and posts them on a popular video website and is selling
an exclusive series of sketches on dvd. the total cost to make the series of sketches is $989.
the materials cost $1.40 per dvd and the shipping costs $2.00 per dvd. kasey plans to sell
the dvds for $12 each.
a. let d be the number of dvds kasey sells. create a profit-peritem model from the given information by writing a rule for c(d), the total costs in dollars, s(d), the total sales income in dollars, p(d), the profit in dollars, and ppi(d), the profit per item sold in dollars.