Match the graph to one of the polar equations.
A. r = -2
B. r sin ? = -2
C. r = -4 cos ?
D. r = -4 sin ?
Answer: D
Mathematics
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Find the average rate of change of the function over the given interval. y = 
, [2, 8]
A. 2
B. 7
C. - 
D. 
Mathematics
Solve the problem.If x = 5 sin ?, show that 
= 5 cos ?.
What will be an ideal response?
Mathematics
Divide and, if possible, simplify. Assume all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics
A college student earns $45 per day delivering advertising brochures door-to-door, plus 75 cents for each person he interviews. How many people did he interview on a day when he earned $129? ?
A. 112 B. 111 C. 113 D. 117 E. 114
Mathematics