Perform the indicated operation and, if possible, simplify.
- 
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.In the Smoky Mountains of Tennessee, the percent of moisture that falls as snow rather than rain is approximated by 
, where P is the percent of snow moisture at an altitude h feet. What altitude corresponds to 7 percent snow moisture?
A. about 109,700 feet B. about 3300 feet C. about 1000 feet D. about 6000 feet
For the functions f(x) and g(x), determine the domain of (f ? g)(x) (the product of f and g).f(x) = 
, g(x) = 
A. {x ? x is a real number} B. {x ? x is a real number and x ? 3} C. {x ? x is a real number and x ? -3 and x ? -7} D. {x ? x is a real number and x ? 3 and x ? 7}
Find all solutions of the equation.2 cos x - 1 = 0
A. x = 
+ n? or x = 
+ n?
B. x = 
+ n? or x = 
+ n?
C. x = 
+ 2n? or x = 
+ 2n?
D. x = 
+ 2n? or x = 
+ 2n?
The width w (in millimeters) of successive growth spirals of the sea shell Catapulus voluto, shown in the illustration, is given by the function 
, where n is the spiral number. To the nearest tenth of a millimeter, find the width of the second spiral.
?
?
A. 8.4 mm B. 3.1 mm C. 2.5 mm D. 4.2 mm E. 11.4 mm