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Math·Problem-Solving and Data Analysis·Ratios, rates, proportional relationships, and units

easy

A region has a total area of 270 square feet. Within the region, there are $n$ objects. Which expression represents the average number of objects per square foot within this region?

A

$\frac{n}{270}$

B

${\left(\frac{n}{270}\right)}^2$

C

$270n$

D

${\left(270n\right)}^2$