Please answer them. 25 points.

Step-by-step explanation:
Initial value is the y-intercept:
Rate of change is the difference in the charge amount per year:
The equation would be:
Initial value
b=1,200
Rate of change is the difference in the charge amount per year:
m = (1,350 - 1,200) / (8 - 5) = 150 / 3 = 50
The equation would be:
y = 50x + 1200