Please help me answer these questions

Listen This is a multiple choice question. Please select only one answer. (12 of 20) LorkE Company's single product has a selling price of $15 per unit. Last year, the company reported total variable expenses of $180,000, fixed expenses of $90,000, and an operating income of $30,000. A study by the sales manager discloses that a 15% increase in the selling price would reduce unit sales by 10%. If her proposal is adopted, what would the outcome be for operating income? increased by $45,000 increased by $7,500 increased by $28,000 increased by $37,500 This is a multiple choice question. Please select only one answer. (14 of 20) Carsy Company applies overhead to jobs on the basis of 150% of direct labour cost. If Job 52 shows $12,000 of manufacturing overhead applied, how much was the direct labour cost on the job? This is a multiple choice question. Please select only one answer. (13 of 20) The Work in Process inventory account of a manufacturing company shows a balance of $2,100 at the end of an accounting period. The job cost sheets of two uncompleted jobs show charges of $800 and $100 for direct materials and charges of $500 and $600 for direct labour. From this information, what predetermined overhead rate, as a percentage of direct labour costs, does the company appear to be using? 8.06% 9.09% 11%