290 million = 290,000,000
scientific notation would be 2.9 x 10^8
the 8 comes from the number of spaces you need to move the decimal point to the left to get 2.9
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>

for solving this linear equation
First, subtract 35 from both sides.

isolate x so divide both sides by 22.50.

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:
Y = 4x +2
Step-by-step explanation:
Y = mx + b where m = slope and b = y-intercept
Answer:
1/18
Step-by-step explanation:
1/3 / 6 = 1/18