I don’t understand this the bottom of the graph by the way just goes across by 0,2,4,6,8,10

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.

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11