I think it is b
The question is asking you to choose an inequality that is greater than 21 not a number 21 and up
Given:
To find:
The solution of the given equation.
Solution:
We have,
It can be written as
![[\because (a^m)^n=a^{mn}]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%28a%5Em%29%5En%3Da%5E%7Bmn%7D%5D)
Taking log on both sides.
![\log [3((2^{2x})]=\log 5^(x+1)](https://tex.z-dn.net/?f=%5Clog%20%5B3%28%282%5E%7B2x%7D%29%5D%3D%5Clog%205%5E%28x%2B1%29)
![[\because \log (ab)=\log a+\log b]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%5Clog%20%28ab%29%3D%5Clog%20a%2B%5Clog%20b%5D)
![[\because \log x^n=n\log x]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%5Clog%20x%5En%3Dn%5Clog%20x%5D)
Putting values of logarithms, we get
![[\because \log 2 =0.301, \log 3=0.477, \log 5=0.699]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%5Clog%202%20%3D0.301%2C%20%5Clog%203%3D0.477%2C%20%5Clog%205%3D0.699%5D)
Divide both sides by -0.097.
Therefore, the value of x is -2.289.
Ben would want to make at least $195, so you would want to use the inequality that allows him to have $195 and over. This means that you have two choices:
x+75+28 ≥ 195
x-75-28 ≥ 195
The answer should be x+75+28 ≥ 195, because it's the sum of the money that Ben has received, plus the amount that he still needs in order to have at least $195.
Answer:
16
Step-by-step explanation:
solution,
2a-4b
2*2-4*-3
4-(-12)
4+12
16
