Cross sections are formed by slicing through figure parallel to its base. in which figure will the cross section and the base NOT be the same size?

On #16 : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.

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?

Keith runs 5 miles in 38 minutes. at the same rate, how many miles would he run in 57 minutes