A diameter of a circle has endpoints P(-10, -2) and Q(4, 6) A: Find the center of the circle.
B: Find the radius. If your answer is not an integer, express it in radical form.
C: Write an equation for the circle.

Set up and solve a proportion for the following application problem. if 55 pounds of grass seed cover 404 square feet, how many pounds are needed for 7272 square feet?

For the right triangle shown, the lengths of two sides are given. find the third side. leave your answer in simplified, radical form.

Einstein office equipment has a rental plan for office machines. a fax machine that lists for $722.98 can be rented for 22% of the price annually. the state imposes a usage charge of 3.2%. if stephen hawking travel decides to rent the fax machine, what will its total monthly rental charge be?