A firm expects to achieve the following level of sales, to make the following purchases of raw materials, and to make the following payments for indirect expenses for the first 4 months of the year. All sales and purchases of raw materials are on credit, and are paid for in the following month. Indirect expenses are paid for in the month they are incurred. Sales in December totalled $75 and purchases of raw materials in December totalled $58. The opening cash balance at the beginning of January was $107. What is the budgeted closing cash balance at the end of April? Jan Feb Mar Apr Sales 76 75 75 73 Purchases of raw materials 51 54 52 57 Indirect expenses 14 16 11 18