Can someone help me please

The answers are
43
99
28
71

With finding limits of multi variable !

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?

Which graph represents the same relation as the table below? x f(x) –2 5 0 1 1 –1 2 –3