Write an inequality involving the variable x that describes the set of numbers graphed.

A. x > 1
B. x ? 1
C. x < 1
D. x ? 1


Answer: A

Mathematics

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Solve the problem.The price P of a certain computer system decreases immediately after its introduction and then increases. If the price P is estimated by the formula P = 120t2 - 1500t + 6100, where t is the time in months from its introduction, find the time until the minimum price is reached.

A. 25 months B. 12.5 months C. 6.3 months D. 7.5 months

Mathematics

Solve the following system by any appropriate method. If there is no real number solution, so state.y - 9x = 09x2 + y2 = 90

A. (1, 9) B. (-1, -9), (1, 9), (-1, 9), (1, -9) C. (-1, -9), (1, 9) D. (-1, -9)

Mathematics

Simplify the decimal expression.15 + 18.34

A. 33.44 B. 3.34 C. 33.34 D. -3.34

Mathematics

Use the graph of the given one-to-one function to sketch the graph of the inverse function. For convenience, the graph of y = x is also given.

A.

B.

C.

D.

Mathematics