Solve the problem.The following graph approximates the average monthly cable TV rates, in dollars, since 1980. The equation of this graph is given by R = -0.0036t3 + 0.13t2 - 0.073t + 7.7 
Use the graph to approximate the domain and range of the function.
A. Domain: [0, ?), Range: [0, 36]
B. Domain: (-?, ?), Range: [0, 32]
C. Domain: [0, 27], Range: [8, 31]
D. Domain: [8, 31], Range: [0, 27]
Answer: C
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The following table shows the amount remaining, in grams, of a radioactive substance after t years.
05101520
500429.37368.71316.63271.9?
A. Calculate the average rate of change in amount of radioactive substance from 
to 
. (Be sure to get the sign right.)B. Explain in practical terms the meaning of the number you calculated in part A.C. Use your answer from part A to estimate the amount remaining after 13 years.D. What is the limiting value of amount remaining of this (or any other) radioactive substance?
What will be an ideal response?
Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = 
, y = 3, x = 0
A. 
?
B. 18?
C. 
?
D. 9?
Solve the problem.The space in a landfill decreases with time as given by the function 
where t is measured in years. How much space is left when t = 1?
A. 200 B. 380 C. 210 D. 110
Solve the problem.During one year 31 new employees began work at Daniel's Manufacturing Company and 13 employees left. At the beginning of the year there were 232 employees. What was the number of employees at the end of the year?
A. 188 employees B. 250 employees C. 263 employees D. 276 employees