If the price elasticity of demand for a good is 2.0, then a 10 percent increase in price results in a: a) 5 percent decrease in the quantity demanded. b) 20 percent decrease in the quantity demanded. c) 40 percent decrease in the quantity demanded. d) 0.2 percent decrease in the quantity demanded.

Suppose you are analyzing the relationship between time and distance given in a table,and there are 4 values for each quantity.you divide distance 2 minus distance 1 by time 2 minus time 1.you then divide distance 4 minus distance 3 by time 4 minus time 3 and get a different answer.what can you say about the relationship?