contractor’s crew can frame 3 houses in a week. How long will it take them to frame 54 houses if they frame the same number each week?

Find x to the nearest hundredth place

What is the binomial expansion of (2x-3)^5

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 $s$?