Tuan wants to sell printed shirts to raise money for the school band. he spends $72.00 to buy a silk-screen machine and ink. he buys each shirt for $1.25. tuan sells each printed shirt for $5.75. how many shirts does tuan need to sell to break even?

Turner's mom measured his room to see how long the wallpaper border needed to be. if two walls are 15 feet long and two walls are 12 feet long, how long should the strip of border be cut?

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years