Evaluate.0 - (-9)
A. 0
B. 1
C. -9
D. 9
Answer: D
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Find the indicated probability.You toss four coins and record the number of tails. You repeat this many times. The results are shown below. 
Find the empirical probability of getting 4 tails. Round your answer to the nearest thousandth.
A. 0.267 B. 0.063 C. 0.071 D. 0.067
Solve the problem.The length of an airconditioning filter is to be between 
and 
and its width is to be between 
and 
Express the possible areas A as an inequality and graph the values of A.
A =
area in hundreds of sq. in.
A. 300 < x < 600
A = area in hundreds of sq. in.
B. 400 < x < 700
A = area in hundreds of sq. in.
C. 400 ? x ? 700
A = area in hundreds of sq. in.
D. 300 ? x ? 600
A = area in hundreds of sq. in.
Three players (one divider and two choosers) are going to divide a cake fairly using the lone divider method. The divider cuts the cake into three slices (s1, s2, and s3).Suppose the choosers value the slices as follows:
Which of the following is a fair division of the cake?
A. Chooser 1 gets s3; Chooser 2 gets s2; Divider gets s1. B. Chooser 1 gets s2; Chooser 2 gets s1; Divider gets s3. C. Chooser 1 gets s2; Chooser 2 gets s3; Divider gets s1. D. Chooser 1 gets s1; Chooser 2 gets s2; Divider gets s3. E. none of these
Solve the problem.The production function z for an industrial country was estimated as 
where x is the amount of labor and y the amount of capital. Find the marginal productivity of labor.
A. 8x3y3 B. 6x4y2 C. 3x4y2 D. 4x3y3