Checking account earnings at Baker's Bank are expressed by the equation: I = -0.09x + 10.2.
While the earnings at Elite Bank are modeled by: I = -0.02% + 7.5.
In both cases, x is the number of checks written.
At what number of checks will Elite Bank start generating more checking account income than Baker's
Bank?
A. 12
B. 25
C. 39
D.42