Find the critical number(s), if any, of the function g(t) = 
Mathematics
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Solve the problem.A water tank is shaped like an inverted cone with height 18 m and base radius 3 m (see figure). If the tank is full, how much work is required to pump the water to the level of the top of the tank and out of the tank? Express the answer in terms of ?. 
A. 85,730,400? J B. 14,288,400? J C. 1,587,600 J D. 2,381,400? J
Mathematics
Evaluate the double integral over the given region.
R = {(x, y): 1 ? x ? 9, 5 ? y ? 7}
A. 320 B. 480 C. 960 D. 640
Mathematics
Write the Egyptian numeral as a Hindu-Arabic numeral.
A. 62 B. 6020 C. 6200 D. 620
Mathematics
Simplify the following expression by first substituting values from the table of exact values and then simplifying the resulting expression.
Table of Exact Values
xsin xcos x0°0130°
45°
60°
90°10?
?
A. 
B. 
C. 1
D. 0
E. 
Mathematics