Question

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=−0.02x+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?(1 point)Responses12122525393942

Answer 1

Set -0.02x + 7.5 > -0.09x + 10.2.
0.07x > 2.7 ⇒ x > 2.7/0.07 ≈ 38.57.

Since x must be a whole number of checks, Elite is higher starting at 39 checks.