find a counterexample to disprove the statement “the rational numbers are closed under the operation of taking the square root”

Rewrite the following quadratic functions in intercept or factored form. show your work. y = x^2 + 7x + 10

The number of calories you burn depends on your weight. a 110-pound person burns 163 calories during 30 minutes of tennis. find the number of calories that a 190-pound person would burn during the same activity, assuming they burn calories at the same rate.

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?