Platinum has a density of 21.5 grams per cubic centimeters. If a ring made of pure platinum has a mass of 6.3 grams, what is its approximate volume in cubic centimeters? A.) 0.3
B.) 3.4
C.) 15.2
D.) 27.8

Collin did the work to see if 10 is a solution to the equation r/4=2.4

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?

Write the slope intercept equation for line ab.