Solve the problem.The function f(x) = x3 describes the volume of a cube, f(x), in cubic inches, whose length, width, and height each measure x inches. If x is changing, find the instantaneous rate of change of the volume with respect to x at the moment when x = 9 inches.

A. 245.71 cubic inches per inch
B. 243 cubic inches per inch
C. 2187 cubic inches per inch
D. 27 cubic inches per inch


Answer: B

Mathematics

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Solve the equation.5(x - 1.2) = 9.3

A. 15.3 B. 2.1 C. 1.62 D. 3.06

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Give a direct proof the following angles


Proof: STATEMENTS REASONS
m?1 + m?2 = 180° ________________________

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Write out the terms of the series.

A.  +  +  +  + 
B.  +  +  + 
C.  +  +  +  + 
D.

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Solve the problem.The outdoor temperature rises by  Fahrenheit. What is this temperature in Celsius?

A. -14° B. 18° C. 10° D. -7.8°

Mathematics