Thomas invested $8,500 for one year. Part of the money was invested at 6% and the rest at 9%. The total interest earned was $667.50. How
much did Thomas invest at the 6% rate?

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

What is a graph with a never ending line called?

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )