18. an electronics store makes a profit of $25 for every portable dvd player sold and $55 for every dvd recorder sold. the managers target is to make at least $225 a day on sales of portable dvd players and dvd recorders. write 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. (choices are in comments)