Here is a puzzle: m+m=N
N+N=p
m+p=Q
p+Q=?
Which expression could be equal to p + Q?
(Select all that apply.)
2p+ m
4m+N
3N
9m

There are 1872 steps in a building that has 104 floors. each floor has the same number of steps. a second building has the same number of floors but 2 fewer steps between each floor. how many steps are there between each floor of the second building?