I need a lot of help with this multi step accounting problem.

1) what raw materials cost would be included in the company's flexible budget for March?

2) what is the materials quantity variance for March?

3) if Preble had purchased 210,000 pounds of materials at $9 per pound and used 200,000 pounds in production, what would be the materials quantity variance for March?

4) if Preble had purchased 210,000 pounds of materials at $9.40 a pound and used 200,000 pounds in production, what would be the materials price variance for March?

5) what direct labor cost would be included in the company's flexible budget for March?

6) what variable manufacturing overhead cost would be included in the company's flexible le budget for March?

7) what is the variable overhead efficiency variance for March?

8) what is the variable overhead rate variance for March?

9) what amounts of advertising, sales salaries and commissions, and shipping expenses would be included in the company's flexible budget for March?

10) what is the spending variance related to shilling expenses?