11. Use matrices to solve the system of equations below. Be sure to show [A] and [B]. (3a + 2b + c = 15
a-b4c = 23
4b – 2c = -16

Acircle has the equation (x-2)^2 +y^2 =5. what are the coordinates of the circle's center?

Which equation represents the partial sum of the geometric series?

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.