If you take a 100 dollars from register then use the money to buy 70.00 purchase then get back 30.00 how much money is lost .

Need on this one asap im almost done with this subject

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!

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)