Joe bought 5 2/5 yards of yarn. the yarn cost 1.80 /yard Joe paid with a 10 dollar bill how much change did Joe receive

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?

The ratio of the perimeters of two similar triangles is 4: 3. what are the areas of these triangles if the sum of their areas is 130cm2?

Lowest fraction using common term 28/35