Find the product
-7 (-a^2) (-b^3)

Acircular city park has a sidewalk directly through the middle that is 111 - feet long. if each bag of fertilizer covers 50 square feet, then determine how many bags of fertilizers the parks and recreation department needs to use to cover the circular park. ignore all the sidewalks around and through the park.

How do the number line graphs of the solutions sets of -23 > x and x-23 differ?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.