Find the sum of (8a+2b-4)

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?

Find the values of the variables in the kite

Which of the following vectors are orthogonal to (2,1)? check all that apply