Easy algebra question below first correct answer gets brainliest

Brainlest answer can you find the area and circumference of a circle given the radius or diameter? if its yes or no explain why

Nine more than four times a number is the same as one less than twice the number. find the number?

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.