If David hikes 4.5 miles an hour how long will it take to hike 18 miles?

Need on this geometry question. explain how you did it.

Abakery recorded the number of muffins and bagels it sold for a seven day period. for the data presented, what does the value of 51 summarize? a) mean of bagels b) mean of muffins c) range of bagels d) range of muffins sample # 1 2 3 4 5 6 7 muffins 61 20 32 58 62 61 56 bagels 34 45 43 42 46 72 75

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25