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I honestly don't know how to do a)
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He should rent from Envo Car because it would be cheaper.
Answer:

Step-by-step explanation:
Given

Required
Solve

Turn division to multiplication


It took him 20 seconds to fill out each one of those balloons. 20x3=60 seconds= 1 minute
Answer: Final cost=1.08(.82y)
Step-by-step explanation: