The value of the surface area (in square centimeters) of the cone is equal to the value of the volume (in cubic centimeters) of the cone. the formula for the surface area s of a right cone is s=3.14s^2+3.14rl, where r is the radius of the base and l is the slant height. find the height of the cone

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.