If c+d=40 and 10 ≤ c ≤ 30, all of the following are possible values of d except,

a. 7
b. 14
c. 21
d. 28

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income

Which is the completely factored from of xy^3-x^3y

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.