Find all of the rational zeros of the polynomial:
?

?
Then find the irrational zeros, if any. Whenever appropriate, use the rational zeros theorem, the upper and lower bounds theorem, Descartes' rule of signs, the quadratic formula, or other factoring techniques.
?

A.
B. ?
C. ?
D. ?
E. ?


Answer: A

Mathematics

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Solve the problem.Suppose that the mean salary in a particular profession is $45,000 with a standard deviation of $2,000. What percentage of people in that profession earn less than $48,000?

A. 93.32% B. 6.68% C. 1.50% D. 55.96%

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Solve the system by the elimination method.  x + 5y = -7 4x + 6y = -28

A. {(-6, -7)} B. {(-6, -1)} C. {(-7, 0)} D. ?

Mathematics

Change the decimal to a common fraction. Then check your answer by doing long division. 

A.
B.
C.
D.

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True or false. For the function  gives the area between the graph of  and the x-axis from 

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Mathematics