According to an article in the NY Times "Sales of water in standard lightweight plastic bottles grew at a rate of more than 15 percent every quarter from 1993 to 2008."

(i) How many quarters are there from the beginning of 1993 to the beginning of 2008?

Express your answer as an integer.

quarters

(ii) For sales to increase 15% per quarter from the beginning of 1993 to the beginning of 2008, how much of an overall increase is that? (Hint: think of compounding for several time periods!)

Express your answer rounded correctly to the nearest whole number, not in percent form!

times

2.

A book is marked 30% off.

What percent of the original price is the sales price?

Express your answer rounded correctly to the nearest tenth of a percent.

3.

Gas prices are up 25% since last year when they were $3.65, how much is gas now?

Express your answer rounded correctly to the nearest cent.