Please help with the Cash Budget, thank you

Solomon Medical had a cash balance of $15,000 on January 1. The company desires to maintain a cash cushion of $7,000. Funds are assumed to be borrowed, in increments of $1,000, and repaid on the last day of each month; the interest rate is 3 percent per month. Repayments may be made in any amount avallable. Solomon pays its vendors on the last day of the month also. The company had a monthly $40,000 beginning balance in its line of credit liability account from last year's quarterly results. Required Prepare a cash budget. (Round intermediate and final answers to the nearest whole dollar amounts. Any repayments should be indicated with a minus sign.)