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Mathematics 7 Online
OpenStudy (anonymous):

The recommended heart rate for excesize, in beats per minute, is given by the expression 0.8(200 - y) where 'y' is a person's age in years. Rewrite this expression by using the Distributive Property. What is the recommended heart rate for a 20- year old person?

OpenStudy (anonymous):

\[0.8(200 - y) =.8\times 200-.8y=160-.8y\] for the first part

OpenStudy (anonymous):

for the second, replace \(y\) by \(20\)

OpenStudy (anonymous):

TY :3

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