1. In an experiment, a researcher has concluded that a dosage of g grams of a certain medicinal formula causes a rat to increase its mass by M, where M = 269 +25). If a
25-gram of the medicinal formula is administered to a rat, how much mass would
the rat gain?

2. Maricis has an initial investment of P280,000.00 in a bank. Every month, she
withdraws P15,000.00 to run her small business at home. How long will the money
be used up completely, given the rate of withdrawal?

3. A taxi ride costs P40.00 for the first 500 meters, and each additional 300 meters
(or a fraction thereof) adds P3.50 to the fare. How much will a taxi passenger pay
for a three-kilometer ride?