# Maria Canlas: Math Quiz

1. $$x^3-3x^2-10x=0$$
2. $$(1+r)^n$$
3. $$(5.7 \times 10^-8) \times (1.6 \times 10^{12})=9.12 \times 10^4$$
4. $$\pi L(1-\alpha)R^2=4\pi \sigma T^4 R^2$$
5. $$12 \text { km } \times \frac {0.6 \text { mile }}{ 1 \text{ km }} \approx 7.2 \text { mile }$$

$12 \text { km } \times \frac {0.6 \text { mile }}{ 1 \text{ km }} \approx 7.2 \text { mile }$

6. $$4,173,445,346.50 \approx 4,200,000,000 = 4.2 \times 10^9$$

7. $50 \text { m } \times \frac { 3.4 \times 10^6 \text { kg }}{1 \text { sec}} \times \frac {10 \text { J }}{ 1 \text { kg } \cdot 1 \text { m }} = 1.7 \text { GW}$

8. $$\ 5,000 \times (1 + 0.012)^{30} \approx \7,150$$

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