Solve the problem.The volume of a right cylindrical cone of height 6 cm and radius r cm is 
cubic centimeters 
Find the instantaneous rate of change of the volume with respect to the radius r when r = 4 cm.
A. 4? cm3/cm
B. 16 cm3/cm
C. 16? cm3/cm
D. 32? cm3/cm
Answer: C
Mathematics
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Determine if the given polar coordinates represent the same point.(7, ?/4), (-7, -?/4)
A. Yes B. No
Mathematics
Solve the problem.The amount of alcohol in the bloodstream, A, declines at a rate proportional to the amount, that is, 
. If 
for a particular person, how long will it take for his alcohol concentration to decrease from 0.10% to 0.05%? Give your answer to the nearest tenth of an hour.
A. 0.2 hr B. 4.6 hr C. 2.3 hr D. 3.5 hr
Mathematics
Solve the equation.
- 6 = -1
A. -50 B. -52 C. 52 D. 50
Mathematics
Solve the exponential equation. Use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution.3(x - 1) = 16
A. {2.68} B. {3.52} C. {1.52} D. {6.33}
Mathematics