What is the expanded form of the expression 3 sigma i^3 i=0

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

To decrease an amount by 16% what single multiplier would you use

Kristen is wrapping presents for the holidays. she has a box that measures 4 ft. x 2 ft. x 2 ft. how many square feet of wrapping paper does she need to cover the box without overlapping?