Solve for p
p\leq -\frac{9}{2}
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p\leq \frac{40.5}{-9}
Divide both sides by -9. Since -9 is negative, the inequality direction is changed.
p\leq \frac{405}{-90}
Expand \frac{40.5}{-9} by multiplying both numerator and the denominator by 10.
p\leq -\frac{9}{2}
Reduce the fraction \frac{405}{-90} to lowest terms by extracting and canceling out 45.
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