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?

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?

Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?

As a self-employed seamstress, you know that it takes 7 yards of material to make 3 jackets. you bought 15 yards of material to make 7 jackets. did you buy enough material? if not, how much were you over or under?