Answer:
Option A) As the Exam 1 score increases by 1 point, the student's Exam 3 grade will increase, on average, by 0.4845 points.
Step-by-step explanation:
We are given the following in the equation:

where, above equation is a linear regression equation to predict the Exam 3 score of students in STA 2023 based on their Exam 1 score.
Here,
y is the dependent variable that is score of exam 3.
x is the independent variable that is the score of exam 1.
Comparing the given equation to a linear equation, we have,

Slope, m = 0.4845
Intercept, c = 50.57
We define the slope as rate of change.
If there is a increase in x by 1 unit, then,

Thus, we can interpret the slope of the line as
Option A) As the Exam 1 score increases by 1 point, the student's Exam 3 grade will increase, on average, by 0.4845 points.