Answer correctly for brainliest and also a ! don't answer if you don't know it : )

Lets use the equation that the question has given us:

y=1.377x+137.763

we know that y is the cost of two bedroom apt and x is the cost of one bedroom apt so lets use the cost of one bedroom apt that they gave us 
724
Therefore, x=724
Lets put that into our eqn
y=1.377(724)+137.763
y=1134.711
rounded up 
y=1135
So the answer is 1135