Answer the question. You will need to use the formula 4.9t2 + vot = s.A rock is dropped from a helicopter at an altitude of 64 meters. Approximately how long does it take for the rock to reach the ground?
A. 3.6 seconds
B. 13.8 seconds
C. 10.9 seconds
D. 0.9 seconds
Answer: A
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Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Solve the inequality and graph the solution on the real number line.
?
?
A. 
B.
C.
D.
E.
Evaluate the surface integral of the function g over the surface S.G(x, y, z) = x2y2z2; S is the surface of the rectangular prism formed from the planes x = ± 2, y = ± 2, and 
A. 512 B. 16 C. 768 D. 256
A can is made from 6 square inches of aluminum. We can calculate both the height 
, in inches, and the volume V, in cubic inches, from the radius r, in inches, of the can:
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Find the radius and height of the can of maximum volume. Round your answers to two decimal places.
?
A. The radius is 1.13 inches, and the height is 0.56 inches. B. The radius is 3.34 inches, and the height is 1.83 inches. C. The radius is 1.83 inches, and the height is 3.34 inches. D. The radius is 0.56 inches, and the height is 1.13 inches.