Expand.
4
A. x2 + 
B. x2 + 2x + 4 + 
+ 
C. x2 + 8x + 24 + 
+ 
D. x2 + 8x + 24
+ 
+ 
Answer: C
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Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at 
and 
. The cross sections perpendicular to the x-axis between these planes are squares whose bases run from the parabola 
to the parabola 
.
A. 441 B. 147 C. 864 D. 882
Solve the minimization problem by using the simplex method to solve the dual problem.Minimize 4x1 + 5x2subject to 5x1 + 4x2 ? 20 4x1 + x2 ? 12 x1 + 3x2 ? 9and x1 ? 0, x2 ? 0
A. Minimum = 
when x1 = 
and x2 = 
B. Minimum = 
when x1 = 
and x2 = 
C. Minimum = 
when x1 = 2 and x2 = 
D. Minimum = 
when x1 = 
and x2 = 
Solve the problem.The stadium vending company finds that sales of hot dogs average 45,000 hot dogs per game when the hot dogs sell for $2.50 each. For each 50 cent increase in the price, the sales per game drop by 5000 hot dogs. What price per hot dog should the vending company charge to realize the maximum revenue?
A. $4.50 B. $3.75 C. $2.00 D. $3.50
Provide an appropriate response.The line of symmetry of a parabola is called the 
of the parabola.
A. axis B. x-intercept C. y-intercept D. vertex