The table shows data from a local landscaper, estimating the area of flower gardens (x) in square feet, and the dollar cost to install them (y). When using the median-fit method with summary points (10, 120), (15, 150), and (25, 200), what is the equation of the best-fit model?

y = 5.33x + 67.78
y = 5.94x + 70.00
y = 6.00x + 56.67
y = 6.00x + 60.00

x y
5 75
10 120
12 130
14 140
15 150
18 160
20 175
25 200
30 240