Solve the problem.The graph shows the average cost of a barrel of crude oil for the years 1981 to 1990 in constant 1996 dollars. Find the approximate average change in price from 1981 to 1986.1996 $/Barrel 
Year
A. About -$9/year
B. About -$4/year
C. About -$37/year
D. About -$15/year
Answer: A
Mathematics
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Completely factor the expression.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Solve the system by graphing.
A. (-5, -2) B. (5, -1) C. (4, 0) D. (5, 1)
Mathematics
Find the percent change if a quantity changes from P1 to P2. Round your answer to the nearest tenth if appropriate.P1 = 5.3, P2 = 2.3
A. -130.4 B. 130.4 C. 56.6 D. -56.6
Mathematics
Graph the equation by plotting points.y = 
x 
A. 
B. 
C. 
D. 
Mathematics