Multiply and simplify.
? 
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.A tank is designed by revolving the parabola y = 5x2, 0 ? x ? 2, about the y-axis. The tank, with dimensions in meters, is filled with water weighing 
How much work will it take to empty the tank by pumping the water to the tank's top? Give your answer to the nearest J.
A. 256,563 J B. 1,642,006 J C. 24,630,086 J D. 8,210,029 J
You want a linearization that will replace the function over an interval that includes the point x0. To make your subsequent work as simple as possible, you want to center the linearization not at x0 but at a nearby integer x = a at which the function and its derivative are easy to evaluate. What linearization do you use?f(x) = -4x2 - 3x + 9, x0 = 1.1
A. -13 - 11x B. 2 C. 13 - 11x D. 14 - 12x
Solve the problem.In one country, it is estimated that in the year 2050, 2% of the population will be over 70. If the population of this country in 2050 is 289 million, how many people will be over 70?
A. 2.89 million B. 8.67 million C. 5.78 million D. 57.80 million
Find the difference.15 - (-10)
A. -25 B. -5 C. 25 D. 5