I have the answers but need help solving step by step

13. Write a quadratic equation that will have a solution of only x = 0. Note: this means there will be a double solution of x = 0.

y = x^2

14. Write a quadratic equation that cannot be factored.

y = x^2 + 1

15. The product of two consecutive positive integers is 72. Find the integers.

Two consecutive positive integers are 8 and 9 both have a product of 72.

At the skate park, an average of 126 bicycle per day are rented in october. this number is 10% less than the average number of bicycles rented per day in september. on aberage, how many bicycles are rentes per day in september. a. 113 b. 140 c. 139 d. 135

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?

What point is the projection of q on a) r b) s c) t