3a store is advertising a sale with 15% off all prices in the store. sales tax is 8%. which equation
will correctly determine the total cost, c, of buying an item with an original price of p, after
the discount and sales tax are included? select all that apply.
a c= 1.08p - 0.15p
b c = 1.15p + 0.08p
c c= 1.08(0.85p)
d c = 0.85p + (0.08)0.85p
e c=p - 0.15p + 0.08p

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.

Apool measures 12.3 feet by 16.6 feet. if the longer wall of the pool has a diagonal of 17.8 feet, what is the volume of the pool? (round to nearest tenth)

Which of the following contains a variable?