Trey has answered 15 emails. this is 20% of emails he must answer. how many emails does he need to answer

And explain how you got it so i can understand future problems : 3

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

The marriott family bought a new apartment three years ago for $65,000. the apartment is now worth $86,515. assuming a steady rate of growth, what was the yearly rate of appreciation? what is the percent of the yearly rate of appreciation?