$\"\"$

\

Quarterback efficiency rating is $\"\"$ .

\

Observe the figure:

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The number of passes completed $\"\"$ is $\"\"$ .

\

The number of passes attempted $\"\"$ is $\"\"$ .

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Passing yardage $\"\"$ is $\"\"$ .

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The number of touchdown passes $\"\"$ is $\"\"$ .

\

The number of interceptions $\"\"$ is $\"\"$ .

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Find Peyton Manning’s efficiency rating. \ \

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$\"\"$

\

Substitute $\"\"$ , $\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ in the formula.

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$\"\"$ \ \

\

$\"\"$

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Subtraction: $\"\"$ , $\"\"$ and $\"\"$ .

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$\"\"$ \ \

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$\"\"$ .

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Add: $\"\"$ .

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$\"\"$

\

Therefore, the effeiency is $\"\"$ .

\

$\"\"$

\

The effeiency is $\"\"$ .