The recommended heart rate for exercise, in beats per minute, depends on a person's age and can be represented by the expression 0.7 (220 - a). Which of the following is an equivalent expression? A. 154

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The expression is:

0.7(220 - a)

Applying distributive property:

0.7*220 - 0.7a

154 - 0.7a (option A)

Vitall answered Jun 10, 2023

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