Find the mean.Jill made purchases for the following amounts: $28.40, $17.30, $26.35, $20.35, $17.80. What was the mean amount of her purchases? Round to the nearest cent.
A. $22.04
B. $18.37
C. $27.55
D. $20.35
Answer: A
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Solve the problem.Money magazine reports that the percentage of trading days in which the Dasdaq loses or gains 2% or more has been increasing since 1995 indicating more volatility in the Dasdaq. Use a graphing utility to fit an exponential function to the data. Predict the percentage of trading days in 2001 having such swings in value.
A. y = 1.278e0.611x, 92 days B. y = 1.669x1.706, 46 days C. y = 1.849e0.531x, 76 days D. y = 2.353e0.610x, 91 days
Graph the parabola and label the vertex. Find the x-intercept.x = (y - 6)2 + 3
A. vertex (3, 6), x-intercept (39, 0)
B. vertex (-3, 6), x-intercept (33, 0)
C. vertex (3, -6), x-intercept (39, 0)
D. vertex (-3, -6), x-intercept (33, 0)
Find the reciprocal.- 14
A. 14
B. 1
C. 
D. - 
The graph of a function f is given. Use the graph to answer the question.Find the numbers, if any, at which f has a local minimum. What are the local minima?
A. f has a local minimum at x = -2; the local minimum is 0 B. f has a local minimum at x = 0; the local minimum is 2 C. f has a local minimum at x = -2 and 2; the local minimum is 0 D. f has no local minimum