I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS IF YOU DO THEN YOU GET REPORTED AND PLEASE EXPLAIN WHY THAT IS THE ANSWER

Answer:
BC=48
Step-by-step explanation:
BC=EF.
so x+37=4x+4
Move things over etc etc:
37=3x+4
33=3x
x=11
BC= x+37
If x=11 then BC= 11+37.