Factor the following polynomial 14c^2+15c

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

What is the result of adding the system of equations? 2x+y=4 3x-y=6

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?