4 1/2 ​ ÷(−1 3/7​ ) please help and hurry

Trish receives $450 on the first of each month. josh receives $450 on the last day of each month. both trish and josh will receive payments for next four years. at a discount rate of 9.5 percent, what is the difference in the present value of these two sets of payments?

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)

How can you find the mean absolute deviation (mad) for this set of data?