Rule: multiply by -3
1) 1
2) -3
3) 9
4) -27
5) 81
6) -243
7) 729
8) -2,187
9) 6,561
The answer is A) 6,561
Amount of money invested: P=$4,100
Interest rate percentage in decimal form: r=7.25%=7.25/100→r=0.0725
Time in years: t=8
Total money in the account at time t: A=?
A=Pe^(rt)
A=$4,100e^(0.0725*8)
A=$4,100e^0.58
A=$4,100(1.786038431)
A=$7,322.757566
A=$7,322.76
Answer: The balance in the account after 8 years is $7,322.76
The answer would be option 'C'
For this case we have:
Let p be the highest price of the TV that Meg can buy
We have to:
5% of p is given by:
![0.05p](https://tex.z-dn.net/?f=0.05p)
So, we have:
![p + 0.05p = 350](https://tex.z-dn.net/?f=p%20%2B%200.05p%20%3D%20350)
Clearing p we have:
![1.05p = 350](https://tex.z-dn.net/?f=1.05p%20%3D%20350)
![p=\frac{350}{1.05}\\p=333.33](https://tex.z-dn.net/?f=p%3D%5Cfrac%7B350%7D%7B1.05%7D%5C%5Cp%3D333.33)
Thus, the highest price of the television that Meg purchases should be
dollars.
Answer:
![p + 0.05p = 350\\p = 333.33](https://tex.z-dn.net/?f=p%20%2B%200.05p%20%3D%20350%5C%5Cp%20%3D%20333.33)