The repost please help someone!

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

How many days was the temperature above 90 degrees?

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!