Answer:
9
Step-by-step explanation:
1) distribute 2 to each term within the parentheses
2) combining like terms ( which means subtract a 6-2)
3) subtract 4 from both sides of the equation
4) divide both sides of the equation by 4
Final answer should be ( x = 1/4 )
The function we have to use in this case is
![m(t)=m_o\cdot(1+\frac{0.03}{4})^{4t}](https://tex.z-dn.net/?f=m%28t%29%3Dm_o%5Ccdot%281%2B%5Cfrac%7B0.03%7D%7B4%7D%29%5E%7B4t%7D)
where mo is the initial amount of money. After 2 teats we get that
![\begin{gathered} m_0\cdot(1+\frac{0.03}{4})^8=800 \\ m_0\cdot1.06=800 \\ m_0=\frac{800}{1.06}\approx754.71 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20m_0%5Ccdot%281%2B%5Cfrac%7B0.03%7D%7B4%7D%29%5E8%3D800%20%5C%5C%20m_0%5Ccdot1.06%3D800%20%5C%5C%20m_0%3D%5Cfrac%7B800%7D%7B1.06%7D%5Capprox754.71%20%5Cend%7Bgathered%7D)
SO he earned 755 approximately
Answer:
3, 12, 21
Step-by-step explanation:
The change is +9