Exam 1: Functions,graphs,and Limits

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List all the values of x for which the given function is not continuous. f(x)={x3 if x5125 if x>5f ( x ) = \left\{ \begin{array} { c l } x ^ { 3 } & \text { if } x \leq 5 \\125 & \text { if } x > 5\end{array} \right.

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A closed cylindrical can has a surface area of 120 π\pi square inches.Express the volume of the can as a function of its radius,r.

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Find the slope (if possible) of the line that passes through the given pair of points. (28,7)and (8,3).

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Determine the domain of the given function. f(x)=x21x+3f ( x ) = \frac { x ^ { 2 } - 1 } { x + 3 }

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Write an equation for the line through (5,4)and parallel to the x-axis.

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