Solve the problem.
-A paddle boat rental company rents paddle boats by the hour. They charge $7.00 per hour for the first 3 rental hours and $5.00 per hour for each additional hour. Write a piecewise function to represent the cost of renting a
Paddle boat as a function of hours it is rented.
A)

f ( x ) = \left\{ \begin{array} { l l } 7 \llbracket x \rrbracket & \text { if } 0 < x \leq 3 \\21 \llbracket x \rrbracket + 5 \llbracket x - 3 \rrbracket & \text { if } x > 3\end{array} \right.

f ( x ) = \left\{ \begin{array} { l l } 7 \llbracket x \rrbracket & \text { if } 0 < x \leq 3 \\7 \llbracket x \rrbracket + 5 \llbracket x - 3 \rrbracket & \text { if } x > 3\end{array} \right.

f ( x ) = \left\{ \begin{array} { l l } 7 \llbracket x \rrbracket & \text { if } 0 < x \leq 3 \\21 + 5 \llbracket x - 3 \rrbracket & \text { if } x > 3\end{array} \right.

f ( x ) = \left\{ \begin{array} { l l } 7 \llbracket x \rrbracket & \text { if } 0 < x \leq 3 \\5 \llbracket x - 3 \rrbracket & \text { if } x > 3\end{array} \right.

Find All Points of Discontinuity, and Determine Whether There Is f(x)=x−1x2−1f ( x ) = \frac { x - 1 } { x ^ { 2 } - 1 }f(x)=x2−1x−1​

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Find All Points of Discontinuity, and Determine Whether There Is $f ( x ) = \frac { x - 1 } { x ^ { 2 } - 1 }$

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