(-5x2 - 3x - 7) + (-2x3 + 6x2 - 8) simplify a) -7x3 + x2 - 3x - 15 b) -2x3 - 3x - 15 c) -2x3 + x2 - 3x - 15 d) -2x3 + x2 - 3x - 1

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

You have 17 cats that live in houses on your street, 24 dogs, 3 fish, and 4 hamsters. what percent of animals on your block are dogs?

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.