0.4. 8 9
Tenths Hundredths Thousandths
A. All the equations are in slope intercept form, so all that's needed to do is plug in 2/3 as the x value in each equation and if the result is 4, then you got the answer.
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{Answer}
<u><em>D. Burn less than 400 calories per hour.</em></u>
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