What number should be added to complete the square of the expression?x2 + 
x
A. 
B. 
C. 
D. 
Answer: B
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Find the average value of 
over the given region.
over the rectangular solid in the first octant bounded by the coordinate planes and the planes 
, 
, 
A. 
B. 
C. 
D. 
Find an equation for the conic that satisfies the given conditions.
ellipse, foci (±1,6), length of major axis 8
Solve.The formula S = A
models the value of a retirement account, where 
number of dollars added to the retirement account each year, 
annual interest rate, and 
value of the retirement account after t years. If the interest rate is 11%, how much will the account be worth after 40 years if $1000 is added each year? Round to the nearest whole
number. A. $41,000 B. $646,827 C. $72,142 D. $2,665,036
Find the area.
A. 6728 ft2 B. 232 ft2 C. 3364 ft2 D. 116 ft2