I need help with question 2 and 3 please!

2. Selected information about Buehler Corporation's operations at high and at low levels of activity follow Level of activit Low 25,000 High 30,000 Total manufacturing costs $575,000 $680,000 $5 $6 Number of units produced Direct material cost per unit Drect labor cost per unit $5 $6 Using the high-low method, what is the cost formula for manufacturing overhead? A) $50,000 per period plus $10 per unit. B) $50,000 per period plus $21 per unit. C) $50,000 per period plus $22 per unit. D) $347,000 per period plus $0.10 per unit. (2 marks) 3. For the current year, Paxman Company incurred $150,000 in actual manufacturing overhead cost. The Manufacturing Overhead account showed that overhead was overapplied in the amount of $6,000 for the year. If the predetermined overhead rate was $8.00 per direct labour hour, how many hours were worked during the year? A) 17,750 hours. B) 18,000 hours. C) 18,750 hours D) 19,500 hours. (1 mark)