Solve the proportion.
8.
30.
7
21

The line y = x + passes through (−3, 7) and is parallel to y = 4x − 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?

Asinusoidal function whose frequency is 1/6pi