Arepairman charges $18 per hour to repair appliances plus $0.27 per mile to drive to the house and back. it took the repairman 2 hours and 15 minutes to fix the andersen's washing machine, and he drove 21 miles to get to their home. he charged $51.84 for the visit. was the charge correct? if not why?

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.

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )

4+(2+x) can you me solve this problem