A group of students organized a car wash for a fundraiser. The students charged $12.00 for each car they washed. In 4 hours, they washed 12 cars. At that rate, how much money could they earn from washing cars for six hours

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Jabari is power washing houses for a summer job. for every job, he charges an initial fee plus $30 for each hour of work. his total fee for a 4 -hour job, for instance, is $170 . jabari's total fee, f, for a single job is a function of the number, t, of hours it takes him to complete the job. write the function's formula.

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m