Find the product.5x(2x + 1)(2x - 1)
A. 5x(4x2 + 0x - 1)
B. 20x3 - 0x2 - 5x
C. 20x3 + 0x2 - 5x
D. 20x2 + 0x - 5
Answer: C
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Find the volume of the pyramid. If necessary, round to the nearest hundredth.
A. 315 yd3 B. 659.4 yd3 C. 630 yd3 D. 210 yd3
Indicate whether the given process is commutative. That is, does changing the order in which the actions are done result in the same final outcome?Washing your hands; drying your hands
A. yes B. no
Solve the problem.Printer A can print Helen's class project in 18 minutes. Printer B can print the project in 30 minutes. If the two printers work together, how long would they take to print out the project?
A. 11
min
B. 8 min
C. 90 min
D. 
min
Solve using artificial variables.Maximizez = 5x1 + 4x2subject to:x1 + 2x2 = 15 x1 + x2 ? 12 2x1 + x2 ? 30 x1 ? 0, x2 ? 0
A. Maximum is 57 for x1 = 9, x2 = 3 B. Maximum is 60 for x1 = 0, x2 = 15 C. Maximum is 75 for x1 = 15, x2 = 0 D. Maximum is 63 for x1 = 11, x2 = 2