Answer:
True
Step-by-step explanation:
because some people at the horse station doesn't have a credit card cashier so they pay cash
Answer:
![y=2^{1-x}](https://tex.z-dn.net/?f=y%3D2%5E%7B1-x%7D)
Step-by-step explanation:
<u>Exponential Function</u>
When we need to express the exponential relation between two variables, we use the equation
![y=Cr^{x}](https://tex.z-dn.net/?f=y%3DCr%5E%7Bx%7D)
where C, r are constants to be determined by using the given points from the table
For x=0, y=2, thus
![2=C.r^{0}=C](https://tex.z-dn.net/?f=2%3DC.r%5E%7B0%7D%3DC)
We find that C=2
The equation is now
![y=2r^{x}](https://tex.z-dn.net/?f=y%3D2r%5E%7Bx%7D)
Now we use the point x=1, y=1
![1=2r](https://tex.z-dn.net/?f=1%3D2r)
We find that
![\displaystyle r=\frac{1}{2}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20r%3D%5Cfrac%7B1%7D%7B2%7D)
Thus, the equation is
![\displaystyle y=2\left(\frac{1}{2}\right)^{x}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20y%3D2%5Cleft%28%5Cfrac%7B1%7D%7B2%7D%5Cright%29%5E%7Bx%7D)
Rearranging
![y=2(2)^{-x}=2^{1-x}](https://tex.z-dn.net/?f=y%3D2%282%29%5E%7B-x%7D%3D2%5E%7B1-x%7D)
The required equation is
![y=2^{1-x}](https://tex.z-dn.net/?f=y%3D2%5E%7B1-x%7D)
We can easily verify the last two points are also obtained by using the equation
<span>In order to obtain "1/10 of 0.08", we must multiply 1/10 by 0.08. For this to be done, we should express both in the same form, either as decimals or as fractions. Since the answer calls for a decimal, we will convert 1/10 into a decimal, which works out to be 0.1. Now, we multiply 0.1 by 0.08, which results in the decimal place moving one position to the left. Therefore, the answer is 0.008.</span>
Answer:
Julie and her 2 sisters want to buy a new videogame, it costs $20, if their grandmother gives them $3.20 to buy it, how much will each have to pay?
Step-by-step explanation:
When you have a problem like this you just have to thing on a reason to multiply by a fraction and a withdrawal from the total, if you are multiplying by a fraction, that means you are dividing money, so thats why we put julie and her sisters as subjects, and her grandma givin them money is to withdraw from the total amount those $3.20