really need help with the following questions! pls help, thanks!

Assume the following information for one of a company's variable expenses: . The activity variance is $900 favorable. . The actual amount of the expense is $8,300. The planned level of activity is 1,000 hours. . The spending variance is $200 unfavorable. The actual level of activity (in hours) must be: Multiple Choice 850 hours. 950 hours. 1.100 hours. 900 hours. Assume the following information for one of a company's variable expenses: The activity variance is $900 favorable. The actual amount of the expense is $8,300. The actual level of activity is 900 hours. . The spending variance is $200 unfavorable. The planned level of activity (in hours) must be: Multiple Choice 1,000 hours. 950 hours. 1,100 hours. 1,050 hours. Assume that a company has two cost drivers-number of courses and number of students. The planned number of courses and students were 5 and 100 respectively. The actual number of courses and students were 6 and 110, respectively. One of the company's expenses is influenced by both cost drivers its cost formulas are $48 per course and $7 per student. The activity variance for this expense would be Multiple Choice $68 F. $68 u 5118 F 5118 U