Perform the indicated operation or operations, if possible.
+ 
A. 
B. Cannot be added
C. 
D. 
Answer: B
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Use a graphing utility to find the equation of the line of best fit. Round to two decimal places, if necessary.
A. y = 9.2x - 2.1 B. y = 9.8x - 2.6 C. y = 9x - 3 D. y = 10x - 3
Solve the problem.A small town takes a poll of how often its citizens went to the local library in a 1-month period. The poll results are shown in the table. 
Let the random variable X be the number of monthly visits to the library made by a randomly selected respondent, and let 
be a probability mass function based on these poll results. Find h(2), and H(2) and explain what each number represents.
A. h(2) = 9 is the probability that the respondent visited the library twice. H(2) = 40 is the probability that the respondent visited the library no more than twice. B. h(2) = 0.18 is the probability that the respondent visited the library twice. H(2) = 0.62 is the probability that the respondent visited the library no more than twice. C. h(2) = 0.09 is the probability that the respondent visited the library twice. H(2) = 0.4 is the probability that the respondent visited the library at least twice. D. h(2) = 0.18 is the probability that the respondent visited the library no more than twice. H(2) = 0.62 is the probability that the respondent visited the library at least twice.
Solve the problem.Find the present value of the deposit. $10,000 at 6% compounded quarterly for 4 years. Round to the nearest cent.
A. $12,689.86 B. $7880.31 C. $12,665.86 D. $7904.31
Evaluate the polynomial or polynomial function for the given value of the variable.f(x) = -9x3 - 8x2 - 4x - 6, f(-2)
A. 62 B. 90 C. -118 D. 42