Mario has 160 pizzas and is collecting two pizzas a week. Write the equation for the number of pizzas Mario has
2 answers:
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Complete the square on the left side:
Then the equation becomes
Both 14 + √186 and 14 - √186 are positive numbers, so we can take the logarithm (base 3) of both sides without issue:
Then in increasing order, the solutions are
<em>c</em> = log₃(14 - √186), <em>c</em> = log₃(14 + √186)