James is in charge of the decorations. He has a total budget of $50 to spend for all of the decorations. James spends $20 on one banner and would like to buy balloons that cost $2 each with the rest of the money .
Write an equation to represent the situation
A. 2x+50=20
B. 2x+20=50
C. X+20=50
D. 2x+70=50
Part b
How many balloons can James buy