Solve.Erika spent  hr on her computer visiting the History Channel and the Discovery Channel websites. She spent  hr at the History Channel website. How many hours did she spend at the Discovery Channel website?

A.  hr
B.  hr
C.  hr
D.  hr


Answer: D

Mathematics

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Solve the inequality and write the solution set in interval notation. ? ?

A.
B.
C.
D.
E.

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Find the expected value.Suppose that 1,000 tickets are sold for a raffle that has the following prizes: one $300 prize, two $100 prizes, and one hundred $1 prizes. What is expected value of a ticket?

A. $300 B. $0.60 C. $1 D. $100

Mathematics

Graph the system of inequalities.y ? x2x + y > 5

A.

B.

C.

D.

Mathematics

Use the rational zeros theorem to completely factor the given polynomial P(x).P(x) = 5x4 + 7x3 - 13x2 - 21x - 6

A. (5x - 2)(x + 1)(x - )(x + )
B. (5x + 2)(x - 1)(x - )(x + )
C. (5x - 1)(x + 2)(x - )(x + )
D. (5x + 2)(x + 1)(x - )(x + )

Mathematics