Isaac is building a birdhouse for a class project. the bird house is a regular hexagonal pyramid. the base has side lengths of 3 inches and an area of 15 square inches. the slant height is 6 inches. find the surface area of the birdhouse

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

With number 11 ( show how you got the answer)

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.