Recall that the average of a function 
on an interval 
is
?
?
Find the average of the given function.
?
over 
?
A. Average = 
B. Average =
C. Average =
D. Average =
E. Average =
Answer: A
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Solve.Computer sales in the United States have increased since 1992. The polynomial 
can be used to approximate the number of computer sales during the years 1990-2000 where x is the number of years after 1990 and the value of the polynomial is the computer sales (in millions). Use the function to predict the number of computers sold in 2001. Round the answer to the nearest tenth of a million.
A. 11.6 million computers B. 17.2 million computers C. 19.0 million computers D. 15.5 million computers
Factor the GCF from the polynomial.5x2 + 15x
A. 5x(x + 3) B. 5x(x + 3x) C. x(5x + 15) D. 5(x2 + 3x)
Calculate the unit vector u = (cos ?)i + (sin ?)j for the given direction angle.? = 
A. 
i - 
j
B. - 
i - 
j
C. - 
i + 
j
D. 
i + 
j
Solve the equation.4x + 12 = 0
A. 
B. 
C. 
D. 