An electronics store makes $125 of profit on every DVD player it sells and $100 on every CD player it sells. The store owner wants to make a profit of at least $500 a day selling DVD players and CD players.
a. write a linear inequality to determine the number of DVD players x and the number of CD players y that the owner needs to sell to meet his goal
b. graph the inequality
c. describe the possible values of x. Describe the possible values of y
d. list three possible combinations of DVD players and CD players that the owner could sell to meet his goal