posted by Pam on .
How would you solve these compound inequalities word problems?
1. The human ear can distinguish sounds between 20Hz and 20,000 Hz, inclusive.
2. For a man to box as a welterweight, he must weigh more than 140 lbs, but at most 147 lbs.
The solution would simply be the statement of the inequality
if x is the number of lbs, then
140 < x ≤ 147
notice 140 is excluded , but 147 is included
Do #1 the same way