Please show all steps/formulas. Thank you!

Purple Cow operations a chain of drive-ins selling primarily ice cream products. The following Based on these data, the monthly break-even sales volume is determined as follows: $9.35(contributionmarginperunit)$12,865(fixedcosts)=1,376gallonsor($25,456) Required: 1. Currently, all store managers have contracts calling for a bonus of 30 cents per gallon for each gallon sold beyond the break-even point. Compute the number of gallons of ice cream that must be sold per month in order to earn a monthly operating income of $15,000 (round to the nearest gallon). 2. To increase operating income, the company is considering the following two alternatives: a. Reduce the selling price by an average of $2.35 per gallon. This action is expected to increase the number of gallons sold by 30 percent. (Under this plan, the manager would be paid a salary of $3,180 per month without a bonus.) b. Spend $4,500 per month on advertising without any change in selling price. This action is expected to increase the number of gallons sold by 10 percent. (Under this plan, the manager would be paid a salary of $3,180 per month without a bonus). 3. Draft a memo to management indicating your recommendation with respect to these alternative marketing strategies