Solve the inequality and express the solution set in interval notation. Graph the solution set on the real number line.8x ? 16
A. x < - 2; (-?, - 2)
B. x > - 2; (- 2, ?)
C. x ? 2; [2, ?)
D. x ? 2; (-?, 2]
Answer: C
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Perform the indicated operation.9 tons 506 lb - 4 tons 871 lb
A. 5 tons 365 lb B. 4 tons 1,635 lb C. 5 tons 1,635 lb D. 13 tons 1,377 lb
Solve the problem.The force needed to keep a car from skidding on a curve varies jointly as the weight of the car and the square of the car's speed, and inversely as the radius of the curve. If a force of 
is needed to keep an 
car traveling at 20 mph from skidding on a curve of radius 
what force would be required to keep the same car from skidding on a curve of radius 
style="vertical-align: -4.0px;" /> at 
Round your answer to the nearest pound of force?
A. 30,857 lb
B. 31,427 lb
C. 30,725 lb
D. 30,889 lb
Evaluate.2log9 
A. 9 B. 1 C. 2 D. 18
Solve the problem.Suppose that the average monthly low temperatures for a small town are shown in the table.
Model this data using f(x) = a sin b(x - c) + d.
A. f(x) = 42 sin 
+ 23
B. f(x) = 23 sin 
+ 42
C. f(x) = 23 sin 
+ 42
D. f(x) = 23 sin 
+ 42