Bananas cost 12 cents each and grapefruits (grapefruit) cost 23 cents each. If I buy three times more bananas than grapefruit, the total cost would be $2.95. (ie p the number of grapefruit and b the number of bananas) Find the grapefruit count and the banana count.

The blue whale is the largest animal living on the earth. the average blue whale measures 100 feet long (30 meters) and weighs 300,000 pounds (136,000 kilograms). a whale’s head is 1⁄3 of the length of its body. a new baby whale is 1⁄4 the length of a grown whale. the average man is 1⁄17 the length of a blue whale, and 1⁄1,818 its weight. a human baby measures 1⁄4 of the length of an adult. calculate the following information: how long is a whale’s head? how long is a new baby whale? how tall is the average man? how much does the average man weigh? how tall is the average human baby?

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)