If an increase in one variable causes a decrease in another ...

[captainjonesify]

If an increase in one variable causes a decrease in another variable, this is
 
  A) a direct relationship.
  B) a dependent relationship.
  C) an independent relationship.
  D) an inverse relationship.

Question 2

Suppose an industry is composed of 10 firms. Each firm's share of total sales in the industry is 10 percent. If two of the firms merge, then the four-firm concentration ratio in the industry is
 
  A) 40 percent.
  B) 45 percent.
  C) 50 percent.
  D) unable to determine.

[lou]

Answer to Question 1

D

Answer to Question 2

C

[captainjonesify]

Excellent

[xiaomengxian]

Gracias!