Provide an appropriate response.In a formula r varies jointly as s and t. if r = 540 when s = 15 and t = 24, find r when s = 21 and t = 30.
A. 771
B. 22.5
C. 945
D. 9,540
Answer: C
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Determine whether the graph has an Euler path that begins and ends at different vertices. If the graph has such a path, say at which vertices the path must begin and end.
A. Yes; E and G B. No C. Yes; F and E D. Yes; C and G
Solve the problem.The current I, in amperes, flowing through a particular ac (alternating current) circuit at time t seconds is I = 110 sin (40?t)What is the period and amplitude of the current?
A. period = 
second, amplitude = 120
B. period = 40? seconds, amplitude = 
C. period = 
second, amplitude = 40
D. period = 
second, amplitude = 110
Use a graphing utility to graph the curve defined by the given parametric equations.x = 3 cos t, y = 2 sin t; 0 ? t ? 2?
A. 
B. 
C. 
D. 
A fox, hunting for a morsel of food, spotted a huge bear about 200 yards due east of him. Before the hunter could become the hunted, the crafty fox ran due north for 200 yards but then realized the bear had not noticed him. Thus he stopped and remained hidden. At this point the bear was due south of the fox. ? The color of the bear was __________.
Fill in the blank(s) with the appropriate word(s).