Randal purchased a rare coin collection for $1803.95. He sold it at a auction for $2700. How much money did he make on the coins?

A ship anchored in a port has a ladder which hangs over the side. The length of the ladder is 200cm, the distance between each rung in 20cm and the bottom rung touches the water. The tide rises at a rate of 10cm an hour.

Give an example of two fractions whose sum can be simplified to 1/2

5 5/8 - 3 2/8 is equal to 2 3/8. True or False?

Solve 5x^2-4x-2=0 by completing the square

Which transformation will always map a parallelogram onto itself

Suppose that the number of inhabitants of country a is given by y=-7.24x+937.69 million, and the number of inhabitants of country b is given y=2.16x+834.29 million, where x is the number of years since 1960.

What is the sum of the geometric sequence 1, 3, 9, if there are 11 terms?

What is the volume of a sphere if the radius is six

The graph shown here displays the distance, in miles, traveled by an airplane in a certain number of hours.

A summer camp is providing breakfast for 350 children that includes a 6 ounce serving of sausage per student. The camp can only purchase sausage in whole 1 pound packages.