Find the product of 6x and 2y2

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.

15/16 as a decimal rounded to the nearest hundredth

What is the solution for 6 - 7/8? explain the steps.