Cost of the spa treatment = $42
Percentage of sales tax = 6%
Percentage of tips = 20%
Normally the tips amount is calculated before adding sales tax.
Then
Amount of tips given = (20/100) * 42
= (1/5) * 42
= 8.40 dollars
Amount of sales tax taken = (6/100) * 42
= 252/100
= 2.52 dollars
Then
The total amount spent for spa treatment = (42 + 8.40 + 2.52) dollars
= 52.92 dollars
So we can see that $52.92 has been spent in total for spa treatment and this amount includes a sales tax of $2.52 and a tip of $8.40.
The standard form will be the first one,
58,430,000,000
The power 10 shows us that we have to move the decimal place to the write, 10 places.
Answer:
2*4ⁿ
Step-by-step explanation:
![4^{n-1}=4^n*4^{-1}\\4^{-1}= \frac{1}{4}\\8*\frac{1}{4}*4^n\\2*4^n](https://tex.z-dn.net/?f=4%5E%7Bn-1%7D%3D4%5En%2A4%5E%7B-1%7D%5C%5C4%5E%7B-1%7D%3D%20%5Cfrac%7B1%7D%7B4%7D%5C%5C8%2A%5Cfrac%7B1%7D%7B4%7D%2A4%5En%5C%5C2%2A4%5En)