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Consider the following circuit. Assume $R_1 = 20 \ k\Omega$, $R_2 = 4.5 \ k\Omega$, $V_{cc} = 10 \ V$, and $V_{dd} = 15 \ V$.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
Determine the Thévenin equivalent voltage and resistance for the given circuit.
The equivalent voltage is $V_{eq} = \boxed{ }$ V.
The equivalent resistance is $R_{eq} = \boxed{ }$ $\Omega$.