A coin is tossed seven times and the sequence of heads and tails is observed. What is the number of different possible outcomes?
A. 21
B. 128
C. 49
D. 14
E. none of these
Answer: B
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Answer the question.If y = sin ?, what is csc ? in terms of y?
A. csc ? = 
B. csc ? = 
C. csc ? = 1 - y
D. csc ? = 
Sketch the line.5x - 25y - 20 = 0
A. 
B. 
C. 
D. 
Evaluate the function for the indicated input and interpret the result.A(10, 26) where A(x, y) = 
. (A computes the average of two numbers x and y.)
A. A(10, 26) = 31 The average of two numbers 5 and 13 is 31. B. A(10, 26) = 36 The average of two numbers 10 and 26 is 36. C. A(10, 26) = 36 The average of 36 is the two numbers 10 and 26. D. A(10, 26) = 18 The average of two numbers 10 and 26 is 18.
Find a rectangular equation for the plane curve defined by the parametric equations.x = 3t3, y = 5t2, for t in (-?, ?)
A. y = 
x2/3
B. y = 15x6
C. y = 5
3/2
D. y = 5
2/3