Each chair in an auditorium is 2.1 feet wide. If there are 32 chairs in a row, exactly how long is a row?
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How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

Sadie computes the perimeter of a rectangle by adding the length, l, and width, w, and doubling this sum. eric computes the perimeter of a rectangle by doubling the length, l, doubling the width, w, and adding the doubled amounts. write an equation for sadie’s way of calculating the

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?