Solve the problem.In how many ways can you answer the questions on an exam that consists of 7 multiple choice questions, each of which has 3 answer choices?
A. 3027
B. 2187
C. 1957
D. 343
Answer: B
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Solve the problem.The positions of two particles on the s-axis are s1 = sin t and 
with s1 and s2 in meters and t in seconds.At what time(s) in the interval 0 ? t ? 2? do the particles meet?
A. t = ? sec and t = 2? sec
B. t = 
? sec and t = 
? sec
C. t = 
? sec and t = 
? sec
D. t = 
? sec and t = 
? sec
Graph the pair of parametric equations with the aid of a graphing calculator.x = 5 cos 2t + 4 cos 6t, y = 5 sin 2t - 4 sin 6t, 0 ? t ? ?
A. 
B. 
C. 
D. 
Use a graphing utility to find the equation of the line of best fit. Round to two decimal places, if necessary.
A. y = 0.5x - 2 B. y = 0.17x + 2.11 C. y = x - 8 D. y = 0.11x + 2.49
Using the horizontal-line test, determine whether the function is one-to-one.
A. one-to-one B. not one-to-one