Answer:
I would say not a function but im not 100% sure, i would go with not a function. Tell me if im wrong.
Step-by-step explanation:
Associative property of addition.
Answer: if you divide 15.55 by 5 the unit price is $3.11
r - 18 = 27
r = 27 + 18
r = 45
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i think the question is not correct write it again or attach the pic ic