To determine which points could appear on the graph of the function \( C = 1.25m + 25 \), we can calculate the total cost \( C \) for various values of \( m \) (miles driven).
Let's calculate a few points:
-
For \( m = 0 \): \[ C = 1.25(0) + 25 = 25 \] So, the point is (0, 25).
-
For \( m = 2 \): \[ C = 1.25(2) + 25 = 2.5 + 25 = 27.5 \] So, the point is (2, 27.5).
-
For \( m = 4 \): \[ C = 1.25(4) + 25 = 5 + 25 = 30 \] So, the point is (4, 30).
-
For \( m = 8 \): \[ C = 1.25(8) + 25 = 10 + 25 = 35 \] So, the point is (8, 35).
Now let's check the options provided:
- (2, 22.5) and (4, 20): Not valid because (2, 22.5) and (4, 20) do not match our calculations.
- (4, 30) and (8, 35): Valid because (4, 30) and (8, 35) match our calculations.
- (30, 4) and (35, 8): Not valid because the first values (miles) would not correspond to the calculated costs.
- (2, 2.5) and (4, 5): Not valid because the costs do not match our calculations.
Therefore, the answer is (4, 30) and (8, 35).