Find the length of the indicated portion of the trajectory.r(t) = (3 + 2t)i + (7 + 3t)j + (5 - 6t)k, -1 ? t ? 0
A. 5
B. 8
C. 9
D. 7
Answer: D
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Solve the problem.If cos x is replaced by 
and |x| < 0.4, what estimate can be made of the error?
A. |E| < 0.000014222 B. |E| < 0.000034133 C. |E| < 0.000005689 D. |E| < 0.000085333
Solve.Two cars leave an intersection. One car travels north; the other east. When the car traveling north had gone 18 miles, the distance between the cars was 6 miles more than the distance traveled by the car heading east. How far had the eastbound car traveled?
A. 30 miles B. 24 miles C. 36 miles D. 18 miles
Find the values of x and y for which the sequence 2,x,y,17,... is arithmetic.
What will be an ideal response?
Use the graph to find the intervals on which it is increasing, decreasing, or constant.
A. Decreasing on (-?, 0); increasing on (0, ?) B. Increasing on (-?, ?) C. Decreasing on (-?, ?) D. Increasing on (-?, 0); decreasing on (0, ?)