An electronics store makes a profit of $20 for every portable dvd player sold and $45 for every dvd recorder sold. the manager's target is to make at least $180 a day on sales of the portable dvd players and dvd recorders. write and graph an inequality that represents the number of both kinds of dvd players that can be sold to reach or beat the sales target. let p represent the number of portable dvd players and r represent the number of dvd recorders.