I like A as the best one
420 = 100*price - (fixed costs)
220 = 60*price - (fixed costs)
If we subtract one from the other one, we get 200 = 40*price, price = 5
that said, fixed costs are 500 - 420 = 80
Now if we move -220 to the right in Answer A, we'll get:
y = 5x -300 + 220 = 5x - 80
So it looks like A describes the model best
I did this last year the answer is 9.5
The equation that models the relationship between the amount of money Sarah has left is 55- 0.65x= y
The answer to your question is 151.6200 hope I helped