Answer:
y-intercept is 30
Step-by-step explanation:
Given the model
comparing this model to the equation of a straight lines we can get the y- intercept

The y- intercept is 30 which is the constant factor and it describes to us about the one-time registration fee of $30.
Sure what is it there is no pictuer
The y-intercept is where the line crosses the y-axis
In this case the line crosses y-axis at (0,3)
Hope this helps :)