Find the exact value of the expression.cos 15° cos 45° - sin 15° sin 45°
A. 
B. 
C. 
D. 
Answer: C
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Find the area of the triangle.
A. 76.5 km2 B. 63 km2 C. 153 km2 D. 119 km2
As part of a quality-control program, the chess sets manufactured by Jones Brothers are subjected to a final inspection before packing. The rate of increase in the number of sets checked per hour by an inspector t hours into the 8 A.M. to 12 noon morning shift is approximately
?
?
How many sets does the average inspector check during a morning shift? (Hint: 
.)
?
A. 196 sets
B. 185 sets
C. 193 sets
D. 189 sets
Evaluate the function as indicated.Find g(5) when g(x) = 
.
A. 
B. 
C. 2
D. 
Solve the problem.A comet follows the hyperbolic path described by 
- 
= 1, where x and y are in millions. If the sun is the focus of the path, how close to the sun is the vertex of the path? 
A. 1.4 million B. 3 million C. 4.4 million D. 19 million