Choose the best answer.The area of a lake is about

A. 2 km2
B. 2 cm2
C. 2 m2
D. 2 dm2


Answer: A

Mathematics

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Evaluate.4x, for x = 5

A. 54 B. 9 C. 45 D. 20

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Simplify.

A. 1
B. - a2
C.
D.

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Find all solutions to the equation.cos x = -  (Express your answer in radians, in exact form.)

A.
B.
C.
D.

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Solve.If a person puts 1 cent in a piggy bank on the first day, 2 cents on the second day, 3 cents on the third day, and so forth, how much money will be in the bank after 40 days?

A. $8.20 B. $4.10 C. $16.40 D. $0.40

Mathematics