The humidity dropped an average of 1 1/3% each hour over the last six hours. what was the total change in humidity?

a: -8%

b: -6 1/3%

c: -7 1/3%

d: -6 1/2

An equation representing lyle’s hedge-trimming business is a = 12n - 300 where a is the amount of profit or loss in dollars and n is the number of hedges trimmed. how would the graph of lyle’s business change if the equation a = 10n - 300 represented his business? the graph would be flatter. the graph would be steeper. the graph would start closer to the origin. the graph would start lower on the y-axis.

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?