The movie started at 11:45 a. m. and ended at 1:20 p. m.
how many hours and minutes long?

The system of equations graphed below has how many solutions?

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?