Milo wants to put a fence around the dog park near his house. He measures the sides and finds they are 7\text{ m}7 m7, start text, space, m, end text and 8\text{ m}8 m8, start text, space, m, end text long. He multiplies 7\times27×27, times, 2 and 8\times28×28, times, 2 and finds he needs 30\text{ m}30 m30, start text, space, m, end text of fencing.

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

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.

Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?