The frequency table shows Sam's record in swimming
Year
Number of medals
2008
2009
2010
2012
2013
Based on this record, what is the probability of picking up a medal won by him in the years 2009 or 2012

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

Out of $20$ creepy-crawly creatures in a room, $80\%$ are flies and $20\%$ are spiders. if $s\%$ of the total legs belong to spiders, what is $s$?

Alex's monthly take home pay is $2,500. what is the maximum bad debt payment he can maintain without being in credit overload?