Samantha sends her son, Barry, to a preschool center on certain days. The cost of preschool is $45 per day along with a fixed mo
nthly charge of $70. Last month, Samantha paid a total of $880 to the preschool center. Let d represent the number of days Barry spent at the preschool center last month. Which equation represents this situation, and how many days did Barry attend preschool last month? A. 880 = 90d + 45; 9 days
