Pls help me i have 5 minutes
2 answers:
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Answer:
Yes, the cost in dollars and the amount of yogurt
are proportional.
The equation is:
Step-by-step explanation:
1. If varies directly as
, you can write it as following:
Where is the constant of proportionality.
2. Let's calculate the value of the constant of proportionality. If and
, you have:
3. Then, the equation is:
4. Let's verify if they are directly proportional. Substitute which is the amount of yogurt bought by Jonah. The result must be $0,48:
5. They are directly proportional.