0.25 is the probability that you would select a score between 300 and 700. I used the empirical rule when i solved this.
Proportional and linear functions are almost identical in form. The only difference is the addition of the “b” constant to the linear function. Indeed, a proportional relationship is just a linear relationship where b = 0, or to put it another way, where the line passes through the origin (0,0).
You’re welcome