# Erin Brennan- Math Quiz

- \(x^3-3x^2-10x=0\)
- \((1+r)^n\)
- \((5.7\times 10^{-8})\times (1.6\times 10^{12})= 9.12\times 10^{4}\)
- \(\pi L(1-\alpha)R^2= 4\pi\sigma T^4R^2\)
- \(12km\times \frac{0.6 mile}{1 km}\approx 7.2 mile\)

\[12km\times \frac{0.6 mile}{1 km}\approx 7.2 mile\]
- \(4,173,445,346.50\approx 4,200,000,000= 4.2\times 10^{9}\)
- \[50 m\times (\frac{3.4\times 10^{6} kg } {1 sec})\times (\frac{10J}{1 kg\times 1m})= 1.7 GW\]
- \(\$5,000\times (1 + 0.012)^{30}\approx\$7,150\)

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