Graph the function in the ts-plane (t-axis horizontal, s-axis vertical). State the period and symmetry of the function.s = -cot 4t
A. Period ?, symmetric about the origin
B. Period 
, symmetric about the origin
C. Period 
, symmetric about the s-axis
D. Period 
, symmetric about the origin
Answer: D
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Translate the words into mathematics. Do not answer the question.What is the sum of 43 and41?
A. 43 + 41 B. 43 - 41 C. 41 ÷ 43 D. 43 ? 41
Solve the problem.Two cars leave an intersection. One car travels north; the other east. When the car traveling north had gone 9 miles, the distance between the cars was 3 miles more than the distance traveled by the car heading east. How far had the eastbound car traveled?
A. 15 miles B. 18 miles C. 9 miles D. 12 miles
Simplify by dividing.
A. 0 B. -28 C. 28 D. undefined
Solve the problem.What is the coefficient of a3b4c2 in the expansion of (a + b + c)9?
A. 40,320 B. 2520 C. 288 D. 1260