# Multi-Step Problem

Level pending

Here are 4 problems, solve each one, the plug the variables into the master equation to get your answer.

Problem 1:

If $$2a + b = 10$$

and $$a = 2b$$

Find $$a$$ and $$b$$

Problem 2:

$$\ cot (6c) = \frac { \sqrt {3} }{2}$$ (In degrees)

Problem 3:

d is the only positive root of the following equation.

$$y = x^{3} - 4.5x^{2} - 11.5x -21$$

Problem 4:

$$\log _{f} 512 = 9$$

Master equation:

$$b × \sqrt {a^{c} (\mod d) × f}$$

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