The area of a circle is 215 ft 2. Find its radius. Use the rules for working with measurements.
A. The radius is 11.7 ft.
B. The radius is 16.5 ft.
C. The radius is 4.14 ft.
D. The radius is 8.27 ft.
E. The radius is 23.4 ft.
Answer: D
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Factor out the GCF from the polynomial.55x - 11
A. 11(5x - 1) B. 11x(5x - 1) C. 11(x - 5) D. 11x(5 - 1)
An object attached to a coiled spring is pulled down a distance a from its rest position and then released. Assuming that the motion is simple harmonic with period T, write an equation that relates the displacement d of the object from its rest position after t seconds. Also assume that the positive direction of the motion is up.a = 13;
T = 7 seconds
A. d = -13 sin 
B. d = -13 cos 
C. d = -7 cos 
D. d = -13 cos 
Find the sum of the infinite series.
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A. 
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B.
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C.
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D.
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E.
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Simplify. Assume that variables represent positive values.
A. 5 B. 25 C. 9 D. 45