A computer store offers customers a protection plan when they buy a computer. When the plan is priced at $50, the store can sell 100 plans every month for a total of $5,000. A research company determines that for every $5 increase in the price of the plan, the store will sell 3 fewer plans per month. PART A:
Write an expression for the price, in dollars, of a plan if the manager implements x number of $5 price increases.
PRICE =

PART B:
Write an expression for the number of plans the store will sell if the manager implements x number of $5 price increases.
NUMBER OF PLANS =

PART C:
write an expression for the total, in dollars, the store will receive from the sale of protection plans if the manager implements x number of $5 price increases.

Write the expression in standard form.
TOTAL=

PART D:
Write an inequality that can be used to find, the number of $5 price increases that the manager should implement to receive a total of at least $7,000 per month from the sale of protection plans.