please help me solve this problem and include an explanation. i would appreciate it!

Commission Plans You just got a job as a salesman, You have a choice of different salary plans Plan A Eamings: 52040 per month plue 10% of sales Plan B Eamings: 51785 per month plus 12% of sales Plan C Eamings 51530 per month plus 15\% of sales Your total compensation will increase for larger alaies yolume and docrease when sales go down. There is a trade off in the three plant. If you want a higher salary, you need to accept a lower oommission. To figure out which plan is best for you, you need to estimate the amount of sales you expect to make during the year. Estimate (Case 1) Sales are about the same every month. Use $4000 as the average per morth. You need to find the total for the entre yoar. Sales are about the same for the firt ten months of the year: $4,000 per month. For November and December they double the previous montis tolal. You neod to find the sales total, in dollars, for the entipe year, using difforent assumptons for revemue. Cakulate your total yearty sales revenie. Cakcutate how much commisuion (bonuw) you woud aan yearly for each case Caioulate the anmual salary for each salary plan. Combine the two paymonts to find which saiary plas pays the most in Case 1