Convert the Chinese numeral to Hindu-Arabic form.
A. 520
B. 620
C. 920
D. 820
Answer: B
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Solve the problem.A swimming pool has a rectangular base 10 ft long and 20 ft wide. The sides are 4 ft high, and the pool is full of water. How much work will it take to lower the water level 2 feet by pumping the water out over the top of the pool? Assume that the water weighs 
Give your answer to the nearest ft ? lb.
A. 199,680 ft ? lb B. 12,480 ft ? lb C. 24,960 ft ? lb D. 99,840 ft ? lb
Evaluate the spherical coordinate integral.
A. 
?2
B. 
?
C. 
?
D. 
?2
Solve the problem.The net income y (in millions of dollars) of Pet Products Unlimited from 2015 to 2017 is given by the equation 
where x represents the number of years after 2015. Assume this trend continues and predict the year in which Pet Products Unlimited's net income will be $352 million.
A. 2022 B. 2020 C. 2021 D. 2019
Solve the equation in the complex number system.8x2 + 1 = 3x
A. 
B. 
C. 
D. 