Homework Help: Algebra

Posted by Tom on Friday, May 11, 2012 at 3:24pm.

The body mass index I can be used to determine an individuals risk for heart disease. An index less than 25 indicates low risk. the formula for body mass index is I=700w/H^. W=weight and H=height, Jeromine is 67 inches tall. What weights will keep his body mass index between 22 & 32

Algebra - Henry, Saturday, May 12, 2012 at 9:33pm
I = 700W/h^2.
His Bmi should be > 22 but < 32.
700W/h^2 > 22
Multiply both sides by h^2/700:
W > (h^2/700)*22
W > (67^2/700)*22
W > 141.1 Lbs.

W < (67^2/700)*32
W < 205 Lbs.

Solution set: 141 < W < 205.

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