2 x 5 x 11 Is it I think. What do you think?
Answer:
is the last one
Step-by-step explanation:
Answer:
![R(x) = (1.3)^{3x-8}](https://tex.z-dn.net/?f=R%28x%29%20%3D%20%281.3%29%5E%7B3x-8%7D)
Step-by-step explanation:
Given
![A(x) = (1.3)^{x + 9}](https://tex.z-dn.net/?f=A%28x%29%20%3D%20%281.3%29%5E%7Bx%20%2B%209%7D)
![B(x) = (1.3)^{4x + 1}](https://tex.z-dn.net/?f=B%28x%29%20%3D%20%281.3%29%5E%7B4x%20%2B%201%7D)
Required
Ratio B(x) to A(x)
This is calculated as:
![R(x) = B(x) : A(x)](https://tex.z-dn.net/?f=R%28x%29%20%3D%20B%28x%29%20%3A%20A%28x%29)
Express as fraction
![R(x) = \frac{B(x) }{A(x)}](https://tex.z-dn.net/?f=R%28x%29%20%3D%20%5Cfrac%7BB%28x%29%20%7D%7BA%28x%29%7D)
Substitute:
and ![B(x) = (1.3)^{4x + 1}](https://tex.z-dn.net/?f=B%28x%29%20%3D%20%281.3%29%5E%7B4x%20%2B%201%7D)
![R(x) = \frac{(1.3)^{4x+1}}{(1.3)^{x+9}}](https://tex.z-dn.net/?f=R%28x%29%20%3D%20%5Cfrac%7B%281.3%29%5E%7B4x%2B1%7D%7D%7B%281.3%29%5E%7Bx%2B9%7D%7D)
Apply law of indices
![R(x) = (1.3)^{4x-x+1-9}](https://tex.z-dn.net/?f=R%28x%29%20%3D%20%281.3%29%5E%7B4x-x%2B1-9%7D)
![R(x) = (1.3)^{3x-8}](https://tex.z-dn.net/?f=R%28x%29%20%3D%20%281.3%29%5E%7B3x-8%7D)
1. Buddy is 1 out of 11 students in the classroom who are spreading Christmas Cheer. What percentage of the class is he?
He is 9% of the class that is spreading Christmas cheer.
2. Santa's sleigh has a Clausometer. The highest measure is 100%. If the Clausometer measured at 45. What would this number be represented as a decimal?
If the clausometer measured at 45 then this number as a decimal will be represented as 0.45.
3. The Jack-in-the-box toys had to be tested! The toys worked 0.985 of the time! What percentage of time did they work?
They worked 98.5% of the time
4. The guys handing out advertisement flyers have handed out 4/5 of their total flyers. What percentage of flyers has been handed out?
80% of flyers have been handed out.
5. When the lights go out in the store at night, there is a 15% off sign hanging up by the makeup counter. What is this number as a decimal and a fraction in simplest form?
This number as a decimal and a fraction in simplest form is 3/20 and 0.15.
Answer:
I don't know you're options but the answer could be 30.