the body mass index "I", can be used to determine an individual's risk for heart disease. An index less than 25 indicates a low risk. The body mass index is given by the formula, or model,
I=700W/H2, where W = weight, in pounds, and H = height, in inches. Francis weighs 171 pounds and stands 72 inches tall. What is his approximate body mass index? Find an inequality describing all weights W that Francis can have and be in the low-risk category.

Question

the body mass index "I", can be used to determine an individual's risk for heart disease.  An index less than 25 indicates a low risk.  The body mass index is given by the formula, or model,
I=700W/H2, where W = weight, in pounds, and H = height, in inches.  Francis weighs 171 pounds and stands 72 inches tall.  What is his approximate body mass index? Find an inequality describing all weights W that Francis can have and be in the low-risk category.

anonymous · Answer

~23
and
W < 185ish

anonymous · Answer

akbr0 can you explain how you arrive at this answer I tried it but could not complete it

anonymous · Answer

ok. So, for the first part, I just plugged in numbers, so : (700*171)/(72^2) roughly equals 23. for the second part, I made an inequality: 700W/(72^2) < 25. So then you multiply both side by 72^2, then divide by 700 to get the max weight he can be and still be below 25

anonymous · Answer

GOOD  EXPLANATION

anonymous · Answer

thanks? can't tell if that was sarcastic haha

anonymous · Answer

akbr0 thank you so much for the clarification that really helped

anonymous · Answer

no problem