Mrs. Pizzarello was helping clean out the staff refrigerator when she found 3 colonies of bacteria in a dish. Mrs. Pizzarello decided to use it as a science experiment. Every hour the number of colonies doubles.

Pranav and molly are selling pies for a school fundraiser. customers can buy blueberry pies and pumpkin pies. pranav sold 6 blueberry pies and 4 pumpkin pies for a total of $106. molly sold 6 blueberry pies and 3 pumpkin pies for a total of $90. find the cost of each of one blueberry pie and one pumpkin pie