Atwenty-year annuity pays $2, 400 + 300k on the first day of the k-th month of the year. thus it pays $2,700 each january 1, $3,000 each february 1 ,. . , $6,000 each december 1. the first payment is on a january 1. find an expression for the value of this annuity just before the first payment and evaluate it if the annual effective interest rate is 5%.

Assume the perpetual inventory method is used. 1) the company purchased $12,500 of merchandise on account under terms 2/10, n/30. 2) the company returned $1,200 of merchandise to the supplier before payment was made. 3) the liability was paid within the discount period. 4) all of the merchandise purchased was sold for $18,800 cash. what effect will the return of merchandise to the supplier have on the accounting equation?