Help me with this pls

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.

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2