Simplify 3^-6x(3^4 divided by 3^0)^2

Is a positive integer raised to a negative power always positive

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)

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