Can someone pls help me with this ASAP !!

What kinds of numbers have an odd number of factors?

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

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.