1.) In \large 10^5 the "10" is the exponent/power and the "5" is the base. Is this true or false?

How do i work this problem out using the equation a=pe^rt

Find the multiplicative inverse of 8-12i

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?