Present Value of an Annuity Estimate the present value of an annuity if payments are $1300 monthly for 15 years and the account earns interest at the rate of 10%/yr compound continuously. (Round your answer to two decimal places.) $ 9602.76 X Need Help? Read It

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I'm unsure about the two Ps in the final part of the answer. Are those both the same variable? It seemed unclear to me how and why that happened. Can you help with that really quickly?

You want to travel to Las Vegas to celebrate spring break and your "A" in your microeconomics class! You are trying to figure out if you should drive or fly. A round trip airline ticket from Riverside to Las Vegas costs $350 and flying there and back takes about 5 hours. Driving roundtrip to Las Vegas costs about $50 in gas and takes about 10 hours. Other things constant, what is the minimum amount of money that you would have to expect to make by gambling in Las Vegas to induce you as a rational individual to fly rather than drive? O $10 an hour $60 an hour O $70 an hour O $300 an hour

What is the best answer between b and c?

The manufacturer of Brand A automobile tires claims that its tire can save 120 gallons of fuel over 54,000 miles of driving, as compared to a popular competitor (Brand B). If gasoline costs $4.00 per gallon, how much per mile driven does this tire save the customer (Brand A versus Brand B)? The savings are $ per mile. (Round to three decimal places.)