Francine cooks vegetable stir-fry 15 days in 4 weeks and chicken stir-fry 6 days in 4 weeks. what percent of the days does francince cook stir-fry?

Factor this polynomial completely x^2-64

Acircus act has 3 times as many elephants as acrobats. jorge noticed that all together there were 56 legs in the circus ring. how many elephants were in the show?

Ateacher wanted to buy a chair, a bookshelf, two tables and a desk. she spent $900 for all five items and the chair and the desk combined 70% of her total. if the bookshelf cost $50, how much did each of the tables cost?