Sophia pays a 19.99 membership fee for an online music store.
a. if she also buys two songs from a new album at a price of $0.99 each, what is the total cost?
b. if Sophia purchases n songs for 0.99 each, write an expression for the total cost.
c. Sophia's friend has saved $118 but is not sure how many songs. Use the expression in part (b) to write an equation that can be used to determine how many songs Sophia's friend can buy.
d. Using the equation written in part (c), can Sophia's friend buy 101, 100, or 99 songs?