The first side of a triangle is four inches longer than twice the second side. The third side of the triangle is 5 inches shorter than the sum of the other two sides. The perimeter is 72 inches. Find the lengths of the three sides. NEED ASAP

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

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?

Explain how you can use the associative property to evaluate (7x50)x4.