Solve the problem.During a drought, the water level in a river dropped 4 inches each day for 2 straight days. What was the change in the water level of the river during this period?
A. 8 in.
B. -6 in.
C. 6 in.
D. -8 in.
Answer: D
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Solve the problem.The 10 ft wall shown here stands 33 feet from the building. Find the length of the shortest straight beam that will reach to the side of the building from the ground outside the wall.
A. 43 ft B. 58.7 ft C. 56.7 ft D. 57.7 ft
Add the polynomials.(2y6 - 3y5 + 5y) + (6y6 + 8y5 - 2y)
A. 16y12 B. 8y6 + 5y5 + 3y C. 11y6 + 10y5 - 5y D. 8y + 5y6 + 3y5
Provide an appropriate response.The formula used to find the volume of the frustum of a square pyramid is 
where b is the length of the base, a is the length of the top, and h is the height. Try to visualize the figure if 
Calculate the volume if 
and 
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A. 16,195,277 cubic feet
B. 16,194,277 cubic feet
C. 16,194,377 cubic feet
D. 64,009 cubic feet
Solve the equation.7k + 21 = 0
A. k = 3
B. k = 
C. k = 
D. k = 2