Solve.A rock falls from a tower that is 147 m high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground (h=0)? Round to the nearest tenth.
A. 5.5 sec
B. 4,400 sec
C. 12.1 sec
D. 30.3 sec
Answer: A
Mathematics
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Use the graph to find a ? > 0 such that for all x, 0 < 
< ? ? 
< ?.
A. 0.46 B. 0.865 C. 0.4481 D. 0.4169
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True or false?The interquartile range of a data set, Q3 - Q1, is less sensitive to outliers (extreme values) than the range.
A. True B. False
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Find the gradient field of the function.f(x, y, z) = ln
+ z3
A. ?f = 
i + 
j + 
k
B. ?f = 
i + 
j + 
k
C. ?f = 
i + 
j + 
k
D. ?f = 
i + 
j + 
k
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Test the vector field F to determine if it is conservative.F = 6x6y5i + 
j - 
k
A. Conservative B. Not conservative
Mathematics