The medium size of a McDonald's soft drink costs $0.40 more than the small size. The small size costs one-third as much as the large size. The large size costs $0.90 more than the medium size. What is the cost of each size?
Create an equation and solve.

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. a new supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which size bag provides the best deal, and how much will you save each month? compare the cost of the new supplier to the current one.

What is the value of x in the following equation. -x ^3/2 = -27

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?