Perform the indicated conversion within American units of length.21,120 feet to miles

A. 4.5 mi
B. 4 mi
C. 105.6 mi
D. 5 mi


Answer: B

Mathematics

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Solve the problem.A spring on a horizontal surface can be stretched and held 0.5 m from its equilibrium position with a force of 40 N. How much work is done in stretching the spring 2 m from its equilibrium position?

A. 40 J B. 160 J C. 80 J D. 320 J

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Multiply.(x2 - x - 8)(x - 1)

A. x3 - 2x2 - 8x + 8 B. x3 - 7x + 8 C. x3 - 2x2 - 7x + 8 D. x3 - 2x2 - 9x - 8

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Use inductive reasoning to write the 6th, 7th and 12th terms of each sequence. Then write a formula for the nth term. Briefly explain your method.

(a) 3, 6, 9, 12, 15, . . (b) 4, 7, 11, 16, 22, . . . (c) 1/3, 2/9, 3/27, 4/81, 5/243...

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Simplify the expression.3x + x

A. 4x B. 3x C. 7x D. 3x + 1

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