15. The number of students in the eighth grade class is three less than twice the number of students in the sixth grade. Ariana defined variables for the situation and used
them to express the number of students in the eighth grade in terms of the number
of students in the sixth grade. Her work is shown. What was Ariana's error?

the answer would be c:   ax + b = ax + c

step-by-step explanation:

if you're trying to figure out how much each ounce cost it would be 0.20

cents each ounce

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