Help me with these questions:

This is a multiple choice question. Please select only one answer. ( 9 of 20 ) Bell Company has provided the following data for maintenance costs: Using the high-low method, what is the cost formula $18,000 plus $0.50 per machine hour $1,625 per machine hour $2.00 per machine hour $24,000 plus $0.50 per machine hour This is a multiple choice question. Please select only one answer. (11 of 20) At a break-even point of 200 units sold, White Company's variable expenses are $8,800 and its fixed expenses are $4,000. What will the company's contribution margin for one additional unit? $5 $15 $10 $20 This is a multiple choice question. Please select only one answer. (10 of 20 ) The break-even point in sales for Rice Company is $400,000, and the company's contribution margin ratio is 20%. Its income tax rate is 20%. If Rice Company desires an after-tax operating profit of $100,000, what would total sales have to be? $1,050,360$1,060,000$1,025,000 Cannot be determined without additional info