Use the appropriate addition formula to find the exact value of the expression.cos 
A. 
B. 
C. 
D. - 
Answer: C
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Simplify the complex fraction using Method 2.
A. 
B. 
C. 
D. 
A mail truck must deliver packages to 5 different homes (A, B, C, D, and E). The trip must start and end at A. The graph below shows the distances (in miles) between locations. We want to minimize the total distance traveled.
The repetitive nearest-neighbor tour starting with vertex A is given by:
A. A, B, C, D, E, A. B. A, E, C, D, B, A. C. A, D, B, E, C, A. D. A, C, D, B, E, A. E. none of these
Solve the problem.At SuperStop, gasoline costs 
per gallon when you pay with a credit card, 
per gallon less when you pay with cash. How much do you save by filling up a 14-gallon tank if you are paying cash?
A. $15.82 B. $11.20 C. $16.94 D. $1.12
Solve the equation in the complex number system.x2 + 49 = 0
A. {-7, 7} B. {7i} C. {-7i, 7i} D. {7}