Algebra
posted by Karen on .
when x number units are sold, the price of each unit (in dollars)is given by P = x/2 + 75, find the unit price when the quantities are sold: 2,7,9,11

Just plug in the assumed value of x and compute x/2 + 75.
When x = 2, P = 2/2 + 75 = $74.
When x=11, P = 11/2 + 75 = $69.50