What is the slope of the line?

Consider the set of all four-digit positive integers less than 2000 whose digits have a sum of 24. what is the median of this set of integers?

Due to financial difficulties the owner of 4 skateboard stores is going to close 2 of his stores. based on the money earned at each store, which two stores should remain open?

The population in a city is modeled by the equation p(d)= 100,000*(1+0.3) where d is the number of decades since 1970