21. Shelly has a cell phone plan that costs $9.99 per month plus $0.05 per minute. Her total bill for the month is $25.59. Write and solve an equation to find how
many minutes she used for the month.

In each bouquet of flowers, there are 2 roses and 3 white carnations. complete the table to find how many roses and carnations there are in 2 bouquets of flowers.

The tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.