Which ordered pairs are in the solution set of the system of linear inequalities? (4, 2)
(12-7)+2(4+6) is the one thats value is 25
We know that they have:
2 entrences
3 ways to chose (escalator,elevator and stairs)
8 gates
and again 3 ways to chose (escalator, elevator and stairway)
now you have to multiply it:

There are 144 different ways that Anita and Terry can go from street level to the trains:)
All you have to do is divide the ounces he has into how much he gives the dog each day so 128/8 is 16