Solve the equation by completing the square.x2 - 8x + 20 = 0
A. 4 ± 2i
B. 6, 2
C. 8 ± 4i
D. -4 ± 2i
Answer: A
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Solve the problems.A wastewater treatment plant processes 613,000 gal/day. Convert this to liters per hour.
A. 96,700 L/h B. 162,000 L/h C. 6,750 L/h D. 9,670 L/h
Solve the problem.An order of award presentations has been devised for seven people: Jeff, Karen, Lyle, Maria, Norm, Olivia, and Paul. In how many ways can the first award be presented to Karen and the last to Lyle?
A. 120 B. 24 C. 360 D. 840
Solve the problem.In deciding whether or not to set up a new manufacturing plant, analysts for a popcorn company have decided that a linear function is a reasonable estimation for the total cost C(x) in dollars to produce x bags of microwave popcorn. They estimate the cost to produce 10,000 bags as 
and the cost to produce 15,000 bags as 
. Find the marginal cost of the bags of microwave popcorn to be produced in this plant.
A. $2490.00 B. $49.80 C. $4.98 D. $0.50
Find the volume.Find the volume of a cube measuring 16 cm on each edge.
A. 48 cm3 B. 512 cm3 C. 4096 cm3 D. 256 cm3