Simplify the expression.-9y3 + 6y3

A. -3y6
B. 3y6
C. -3y3
D. 3y3


Answer: C

Mathematics

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The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds). s (m)When is the body moving backward?

A. 8 < t < 9 B. 8 < t ? 10 C. 2 < t < 3, 4 < t < 5, 7 < t < 9 D. 2 < t < 3, 4 < t < 5, 7 < t < 8

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Determine whether the expression is a polynomial. If so, write the polynomial in standard form. ? ?

A. ?Polynomial: 
B. ???Polynomial: 
C. ??Polynomial: 
D. ?Polynomial: 
E. ?The expression is not a polynomial.

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Graph the fraction or mixed number on a number line. 

A.

B.

C.

D.

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Convert the rectangular equation to a polar equation that expresses r in terms of ?.y2 = 2x

A. r = 4 cot x cscx B. r = 2 cot x cscx C. r2(cos ? + sin ?) = 2 D. r = 2 cot2 x

Mathematics