Find the product. Leave answer reduced to lowest terms, and assume that all variables have nonzero values.
? 
A. 3n
B. 
C. n3
D. 
Answer: C
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Solve the problem.The following table shows the rate of water flow (in gal/min) from a stream into a pond during a 30-minute period after a thunderstorm. Use the Trapezoidal Rule to estimate the total amount of water flowing into the pond during this period. Round your answer to the nearest gallon.
A. 6983 gal B. 7850 gal C. 6975 gal D. 6383 gal
Let U = {q, r, s, t, u, v, w, x, y, z} A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, y, z}. List the elements in the set.(A ? B)'
A. {r, t, v, x} B. {t, v, x} C. {s, u, w} D. {r, s, t, u, v, w, x, z}
Divide.
Round to the nearest tenth.
A. 75.4 B. 7.5 C. 75.5 D. 7.6
Solve the problem.The table below gives the violent crime rate (per 100,000 people) for a particular state every five years from 1970 to 2010. 
Use technology to find the cubic function that is the best fit for this data, where x is the number of years after 1970. Round to five decimal places.
A. y = -0.00024x3 + 0.02250x2 - 0.03111x + 4.68687 B. y = -0.00034x3 + 0.01950x2 - 0.04893x + 4.79798 C. y = -0.00053x3 + 0.02460x2 - 0.01893x + 5.79798 D. y = 4.79798x3 - 0.04893x2 + 0.01950x - 0.00034