Moira Denise is preparing to open a small business. With so many up-front costs, she is on a tight budget and must select an appropriate long-distance telephone package. After contacting the telephone provider, she must select one of the following plans: Plan A: A pay-per-minute plan in which the cost is $0.12 per minute of long-distance calling. 1 Plan B: A flat rate plus a fee-for-service plan in which Moira would pay $18.00 per month for 300 long-distance minutes and $0.05 per minute of long-distance thereafter. With Plan B, if she uses less than 300 minutes, she must still pay $18.00 per month. Plan C: A flat rate plus a fee-for-service plan in which Moira would pay $25.00 per month for 450 long-distance minutes and $0.04 per minute of long-distance thereafter. With Plan C, if she uses less than 450 minutes, she must still pay $25.00 per month Required: Which plan should Moira choose if she expects to use 100 long-distance minutes per month? 300 minutes? 500 minutes? Show your calculations