Patrick L. answered 09/13/20
AA in Mathematics with 5+ Years of Tutoring Experience
Let d be the number of DVDs. Then we have
C = 0.99d + 39.95, where C is the cost of renting the DVDs.
Let C be the amount Stephen spent on renting DVDs.
0.99d + 39.95 = 55.79
0.99d = 15.84
d = 16
Stephen rented 16 DVDs, which cost him $55.79.