A local bank charges ​$14 per month plus 3cents per check. The credit union charges ​$2 per month plus 6cents per check.

Question

How many checks should be written each month to make the credit union a better deal?

Answer 1

N = # of checks

2 + 6N < 14 + 3N

Subtract 3N from each side

2 + 3N < 14

Subtract 2 from each side

3N < 12

N < 4