The Cena can take 7 courses
We have given that the karate charges $35 for the first course and $22.50 for each course after that. Our total is $170.
<h3>What is the condition we can write here?</h3>
![22.50x + 35 = 170](https://tex.z-dn.net/?f=22.50x%20%2B%2035%20%3D%20170)
for solving this linear equation
First, subtract 35 from both sides.
![22.50x = 135](https://tex.z-dn.net/?f=22.50x%20%3D%20135)
isolate x so divide both sides by 22.50.
![x=\frac{135}{22.50}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B135%7D%7B22.50%7D)
Therefore we get x = 6
Remember to add the additional class, so x is actually 7.
So,the Cena can take 7 courses.
To learn more about the linear equation visit:
brainly.com/question/1549055
Answer:
7.41 rounded answer
Step-by-step explanation:
There are two intersection points (-1, 1) and (-2, 3), and the x coordinates are -1 and -2.
<h3>What is an exponential function?</h3>
It is defined as the function that rapidly increases and the value of the exponential function is always a positive. It denotes with exponent y = a^x
where a is a constant and a>1
The question is incomplete.
The complete question is in the picture, please refer to the attached picture.
We have two equations:
y = –2x – 1 and
![\rm y = 3^{-x-1}](https://tex.z-dn.net/?f=%5Crm%20y%20%3D%203%5E%7B-x-1%7D)
From the graph, we can see:
There are two intersection points:
(-1, 1) and (-2, 3)
The x coordinates are -1 and -2
x = -1, y = 1
x = -2, y = 3
Thus, there are two intersection points (-1, 1) and (-2, 3), and the x coordinates are -1 and -2.
Learn more about the exponential function here:
brainly.com/question/11487261
#SPJ1