Find the value of x that solves the system shown below. show the work that leads to your answer.

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.

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

If square root x = -7, then x= -49 true or false