A snack bar sells 20 cups of hot chocolate on Monday. On Friday they sell 30 cups of hot chocolate. What is the percent increase/decrease?

Write the sentence as an equation. z plus 372 is equal to 160

Which of the following are parts of a sphere

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.