Jonah wants to save up some money to buy a new smartphone, so he babysits on the weekends. He earns 20 dollars per hour babysitting.
There is a proportional relationship between the time Jonah spends babysitting (in hours), x, and the amount of money he earns babysitting (in dollars), y.

The situation you're describing involves a proportional relationship between the time Jonah spends babysitting and the amount of money he earns. Given that Jonah earns $20 per hour, the relationship between the hours he works (denoted by $x$) and the money he earns (denoted by $y$) can be expressed by the equation:

\[
y = 20x
\]

Where:
- $y$ is the total amount of money Jonah earns (in dollars).
- $x$ is the number of hours Jonah babysits.
- The constant of proportionality is 20 (since he earns $20 per hour).

This equation shows that for every hour Jonah works, he earns an additional $20. So, if you know how many hours Jonah babysits, you can calculate how much money he earns by multiplying the hours by 20.

### Example:
- If Jonah babysits for 5 hours, his earnings will be:
  \[
  y = 20 \times 5 = 100 \text{ dollars}
  \]

Let me know if you'd like more details or have any questions!

Here are 5 related questions to explore further:

1. How much will Jonah earn if he babysits for 10 hours?
2. How many hours does Jonah need to babysit to earn $200?
3. What if Jonah's rate increased to $25 per hour? How would that affect the relationship?
4. If Jonah worked 15 hours in total over several weekends, how much money would he have earned?
5. How long would it take Jonah to save up for a phone that costs $500?

**Tip:** When working with proportional relationships, always look for the constant of proportionality, which shows how one variable changes in relation to the other.

Jonah wants to save up some money to buy a new smartphone, so he babysits on the weekends. He earns 20 dollars per hour babysitting. There is a proportional relationship between the time Jonah spends babysitting (in hours), x, and the amount of money he earns babysitting (in dollars), y.

Explore how Jonah's babysitting hours are proportional to his earnings, with a rate of $20 per hour. Learn how to calculate his total earnings using the linear equation y = 20x. This guide covers proportional relationships, ideal for students in Grades 6-8.

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