Solve the problem.The area of a rectangular piece of cardboard shown is 688 square inches. The cardboard is used to make an open box by cutting a 4-inch square from each corner and turning up the sides. If the box is to have a volume of 1120 cubic inches, find the dimensions of the cardboard that must be used.
A. 12 inches by 39 inches
B. 8 inches by 31 inches
C. 20 inches by 47 inches
D. 16 inches by 43 inches
Answer: D
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Use the range rule of thumb to approximate the standard deviation.496, 598, 503, 528, 565, 601, 576, 543
A. 18.75 B. 60.6 C. 26.25 D. 170.2
Solve the problem.Find the point on the curve of intersection of the paraboloid 
and the plane 
that is closest to the origin.
A. (1, 1, -1) B. (1, 1, 1) C. (-1, 1, 1) D. (1, -1, 1)
Graph f by hand by first plotting points to determine the shape of the graph.f(x) = -3
A. 
B. 
C. 
D. 
Solve the problem.The diagram below shows the side view of a plan for a slanted roof. Find the unknown length in this roof plan. Round approximations to the nearest tenth. 
16 ft
A. 9 ft B. 160 ft C. 12 ft D. 17.9 ft