Properties of a quadratic when b = 0

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

What is the total surface area of this square pyramid?

Ian is in training for a national hot dog eating contest on the 4th of july. on his first day of training, he eats 4 hot dogs. each day, he plans to eat 110% of the number of hot dogs he ate the previous day. write an explicit formula that could be used to find the number of hot dogs ian will eat on any particular day.