In what way does renewable energy differ from nonrenewable energy?
a. it is cheaper to produce than nonrenewable energy
b. it is derived from natural resources that cannot be depleted
c. it is never used in automobiles
d. it creates no environmental hazards as nonrenewable energy does

What is the base of 1/9 to the power of 2

Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?