I think that it gets smaller. (not entirely sure)
It is most likely 14 units so it would be A. I think.
F(x)=y=the amount of money, in dollars , that Kad had after she bought the tickets.
x=price of one ticket
f(x)=-3x+36.75 or y=-3x+36.75
90x+60y=72
60y=-90x+72
y=-1.5x+1.2
then create a graph using this formula.
Hope this helps!
I hope this helps you
Area=width×length
Area=18×4
Area=72