Solve the problem.Bert is 22.5 kilometers away from Brenda. Both begin to walk toward each other at the same time. Bert walks at 2.5 kilometers per hour. They meet in 5 hours. How fast is Brenda walking?
A. 2.5 kilometers per hour
B. 3 kilometers per hour
C. 2 kilometers per hour
D. 4 kilometers per hour
Answer: C
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Find all local extreme values of the given function and identify each as a local maximum, local minimum, or saddle point.
A. 
saddle point; 
saddle point
B. 
local maximum
C. 
local maximum; 
local minimum
D. 
local minimum
Subtract.(3a3b5 - 5a4b2 + 9ab3 - 7ab + 14) - (11b5a3 - a4b2 + 11ab3 - 3)
A. -5a3b5 - 7a4b2 - 20ab3 - 7ab + 11 B. 8a3b5 - 4a4b2 - 20ab3 - 6ab + 11 C. -8a3b5 - 4a4b2 + 2ab3 + 7ab + 15 D. -8a3b5 - 4a4b2 - 2ab3 - 7ab + 17
Write a signed number for the statement.$158 profit
A. -$158 B. $158
Solve the problem.A satellite dish is shaped like a parabola. The signals that are received by the dish strike the surface of the dish and are reflected to a single point, where the receiver of the dish is located. If the dish is 12 feet across at its opening and 3 feet deep at its center, at what position should the receiver be placed?
A. 3 feet from the base along the axis of symmetry B. 0.4 feet from the base along the axis of symmetry C. 9 feet from the base along the axis of symmetry D. 12 feet from the base along the axis of symmetry