Chris is going for a walk. he walks at a speed of 3 miles per hour for 4.8 miles for how many hours does he walk

Use the elimination method to solve the system of equations -x+5y=-4 and 4x+3y=16

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.

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.