im stuck on these three

6. The selling price of Lydia Corporation's only product is $20; its variable cost is $12 per unit. The company's annual fixed expenses total $140,000 and its target operating income is $50,000. The dollar sales needed to obtain this target operating income is: a. $400,000 b. $475,000 c. $285,000 d. $23,750 7. Money, Inc. is a leading manufacturer of ATM machines. The controller has prepared the following financial projection for next year: Money, Inc. How many ATM machines must Money sell next year in order to break even? a. 333 b. 426 c. 494 d. 630