Use positive rational exponents to rewrite the expression.
A. (y + 1)7/2
B. 
C. (y + 1)9/14
D. (y + 1)5/14
Answer: D
Mathematics
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Graph the pair of parametric equations with the aid of a graphing calculator.x = 3 cos t + cos 3t, y = 3 sin t - sin 3t, 0 ? t ? 2?
A. 
B. 
C. 
D. 
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Use FOIL to multiply.(a - 7)(a - 8)
A. 2a2 - 56 B. a2 + 15a - 56 C. 2a + 56 D. a2 - 15a + 56
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Find the LCM of each group of expressions.60, 80, 70
A. 560 B. 240 C. 840 D. 1680
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Evaluate the expression for a = -5, b = 16 and c = 7.abc + b2
A. -304 B. -108 C. 114 D. -114
Mathematics