Lana wants to buy a book for $6.95. how can she pay for the book using only dollors, dimes, ans nickels?

The function models the number of accidents per 50 million miles driven as a function

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 $s$?

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?