Factor Completely: 100x2 - 1

How do i do this activity, is appreciated

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.