Will mark brainlist or whatever (word in blue says miles btw if you couldn’t read it)

Answer:
y = 2.75x + 7.5 | 10 miles
Step-by-step explanation:
the equation would be like this, y = ax + b
29.5 = 2.75(8) + b, b = 7.5 so the sub charge is 7.5
therefore the equation is y = 2.75x + 7.5
.
35 = 2.75x + 7.5 , x = 10 miles