Michael J. answered 03/30/17
Tutor
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Effective High School STEM Tutor & CUNY Math Peer Leader
He makes 40 cookies in 1 hour.
He makes 80 cookies in 2 hours.
He makes 120 cookies in 3 hours.
The equation that satisfies this situation is
y = 40x
where:
x = hours
y = amount of cookies