Which of the following is NOT equivalent to 54x – 81 ?
Hint: The act of doing distributing backwards is
called factoring.

6(9x – 13)
-27(-2x + 3)
-9(-6x +9)
3(18x – 27)

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?

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?