Write an equivalent expression to x-9y+ 4. Choose the correct answer below.
OA. X-9y+4 = 4(x - 9y + 1)
OB. X-9 + 4 = x-(-9y) + 4
OC. X-9y + 4 = x +4 +9y
OD. X-9y+ 4 = x +4+(-9y)

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?

The actual length of side t is 0.045cm. use the scale drawing to find the actual side length of w