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 1990.1996 $/Barrel 
Year
A. About -$1/year
B. About -$24/year
C. About -$4/year
D. About -$44/year
Answer: C
Mathematics
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Divide.(x4 - 2x2 + 6x - 9) ÷ (x2 - 3)
A. x2 + 1 + 
B. x2 - 1 + 
C. x2 - 1 + 
D. x2 + 1 + 
Mathematics
Evaluate the expression.
A. 1 B. 11 C. 0 D. 39,916,800
Mathematics
Solve the problem.The cost of manufacturing a particular videotape (in dollars) is c(x) = 12,000 + 8x, where x is the number of tapes produced. The average cost per tape (in dollars), denoted by 
(x), is found by dividing c(x) by x. Find 
(x).
A. $6 B. $10 C. $14 D. does not exist
Mathematics
Write each whole number in expanded form.587
A. 700 + 80 + 5 B. 58,700 C. 500 + 80 + 7 D. 5000 + 800 + 70
Mathematics