Its B) The area of a rectangle with side lengths 1.3 and x.
Explanation:
Ang number with a variable next to it basically means you multiply it to that variable once you know the its true value.
So 1.3x basically means 1.3 • x
In choice B, we all know that the formula for area of rectangle is multiplying the two side lengths (length x width).
Where in this situatuon ine side length is 1.3 and the other is x.
Therefore, Situation B) can represent 1.3x
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