What conclusion can be made based on this multiplication problem?

7 × 3 = 21

seven is 3 times the size of 21.
seven is 21 times the size of 3.
twenty-one is 7 times the size of 7.
twenty-one is 7 times the size of 3.

John bought 5 lemons and used 2 of them for a salad how much did he use for.a salad . he used % of the lemons.

What is the product? (x2+3y+7) [yy+1)

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.