Potatoes cost $0.85 per pound. Luke bought 2.75 pounds of potatoes. How much did he pay for the potatoes? Round to the nearest cent. I know the answer is 2.34 (approximately) but please explain how you get from 2.3375 to 2.34

In the diagram of circle a what is m

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.