Solve the problem.If the points P, Q, R, S, T, and U are equally spaced and collinear, then find the center and scale factor for the dilation taking 
to 
.P Q R S T U? ? ? ? ? ?
A. Center Q; scale factor 2
B. Center R; scale factor 2
C. Center P; scale factor 1/2
D. Center P; scale factor 2
Answer: D
Mathematics
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Find the mass of the wire that lies along the curve r and has density ?.C1: r(t) = (6 cos t)i + (6 sin t)j, 0 ? t ? 
;C2: r(t) = 6j + tk, 0 ? t ? 1; ? = 7t5
A. 
?5 units
B. 
units
C. 
?5 units
D. 
units
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Add or subtract. Simplify the answer.
+ 
A. 
B. 
C. 
D. 
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Evaluate.3x2 + 3x - 1 ; x = -4
A. -25 B. 35 C. 31 D. 25
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