The graph of a function is sketched below.
?
?
Determine the interval on which the function is decreasing.
?
A. (-?, -3] ? [-1, ?)
B. ?[-3, -1]
C. ?[-1, -1]?
D. ?[1, 3]?
E. (-?, -3] ? [-1, ?)?
Answer: B
Mathematics
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Find the slope of the line through the pair of points.(9, -2) and (9, 1)
A. 0 B. Undefined C. -3 D. 3
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A coin is "loaded" so that the probability of tossing a head is 
. If it is tossed 50 times, what are the mean and the standard deviation of the number of heads that occur?
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A. 
?
B.
?
C.
?
D.
?
E.
Mathematics
Find dy for the given values of x and ?x.y = x3 - 4x2 + 2x + 1; x = 8, ?x = -0.3
A. 39 B. -39 C. -37 D. 37
Mathematics
Solve the right triangle.
A = 59.23°, c = 42.4
A. B = 30.77°, a = 36.4, b = 21.7 B. B = 59.23°, a = 21.7, b = 36.4 C. B = 30.77°, a = 21.7, b = 36.4 D. B = 59.23°, a = 36.4, b = 21.7
Mathematics