Answer:
When the eqn cuts the x-axis , y=0
3x=12
x=12/3
x=4
So,at x=4 is the point at which the linear equation cuts the x-axis
So you know 50% means half right? So then do 32*2 and you get 64.
Add 7 and 7 which is 14 and then take it apart because it is an even number