Complete the equation of the line whose y-intercept is (0,5) and slope is -9

Me answer number 3plz explain how you do it

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.

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42