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The variable m should equal -5
Answer:
B, 2,010
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Line plots are used to display data elements using markers
The total growth, in inches, of Isabella's plant is
inches
<h3>How to determine the total growth</h3>
From the line plot, the total growth can be represented as:

Evaluate the products

Evaluate the sum

Evaluate the numerator

Evaluate the quotient

Hence, the total growth, in inches, of Isabella's plant is
inches
Read more about line plots at:
brainly.com/question/15853311