The height, h (in feet), of a ball tossed in the air is given as an equation of time, t (in sec). h() = −162 + 30 + 60
a) How long after the ball is thrown will the ball be 15 feet above the ground?
b) How long will it take the ball to reach the ground?

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?

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

Emily is entering a bicycle race for charity. her mother pledges $0.90 for every 0.75 mile she bikes. if emily bikes 18 miles, how much will her mother donate?