hello, im having a hard time solving this problem from the book Fundamentals of Corporate Finance, 10ce. from chapter 18 exercise 15. thank you

15. Calculating the Cash Budget (LO4) Cottonwood Inc. has estimated sales (in millions) for the next four quarters as follows: QI Q2 Q3 Q4 Sales $160 $175 $190 $215 Sales for the first quarter of the year after this one are projected at $170 million. Accounts receivable at the beginning of the year were $68 million. Cottonwood has a 45-day collection period. Cottonwood's purchases from suppliers in a quarter are equal to 45% of the next quarter's forecast sales, and suppliers are normally paid in 36 days. Wages, taxes, and other expenses run about 25% of sales. Interest and dividends are $12 million per quarter. Cottonwood plans a major capital outlay in the second quarter of $75 million. Finally, the company started the year with a $49 million cash balance and wishes to maintain a $30 million minimum balance. a. Complete a cash budget for Cottonwood by filling in the following: COTTONWOOD INC. Cash Budget (in 9 millions OZ Beginning cash balance $49 Net cash inflow Ending cash balance Minimum cash balance 30 Cumulative surplus (deficit) COTTONWOOD INC. Cash Budget (in $ millions CZ 03 04 Beginning cash balance $49 Net cash inflow Ending cash balance 30 Minimum cash balance Cumulative surplus (deficit) b. Assume that Cottonwood can borrow any needed funds on a short-term basis at a rate of 3% per quarter and can invest any excess funds in short-term marketable securities at a rate of 2% per quarter. Prepare a short-term financial plan by filling in the following schedule. What is the net cash cost (total interest paid minus total investment income earned) for the year? Page 7419 COTTONWOOD INC Short Term Financial Plan (In $ millions 01 oz 3 $30 Beginning cash balance Net cash inflow New short-term investments Income from short-term investments OTTONWOOD INC. Short-Term Financial Plan (In $ millions) 01 OZ 0 07 Beginning cash balance $30 Net cash inflow New short-term investments Income from short-term investments Short-term investments sold New short-term borrowing Interest on short-term borrowing Short-term borrowing repaid Ending cash balance Minimum cash balance Cumulative surplus (deficit) 30 Beginning short-term investments Ending short-term investments Beginning short-term debt Ending short-term debt