Determine whether the graph is the graph of a function.
A. Yes
B. No
Answer: A
Mathematics
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Graph the function.y = 0.8 cos x
A. 
B. 
C. 
D. 
Mathematics
For the point given in rectangular coordinates, find equivalent polar coordinates 
for 
and 
(0, -9)
A. (9, 180°) B. (-9, 0°) C. (9, 90°) D. (9, 270°)
Mathematics
Solve the problem.The following table shows the pricing schedule for a phone company's long-distance rates. 
Below is a portion of Andrea's long-distance call summary. Find the mean and median duration of the calls. 
A. mean: 38 min.; median: 29 min. B. mean: 38 min.; median: 47 min. C. mean: 43.5 min.; median: 38 min. D. mean: 38 min.; median: 43.5 min.
Mathematics
Determine if the given value is a solution to the equation.w2 + 6w + 9 = (-w - 3)2; w = -3
A. No B. Yes
Mathematics