SOLUTION: A local bank charges $8 per month plus 5 cents per check. The credit union charges $2 per month plus 8 cents per check. How many checks should be written each month to make the cre

Question 499382: A local bank charges $8 per month plus 5 cents per check. The credit union charges $2 per month plus 8 cents per check. How many checks should be written each month to make the credit union a better deal?
Answer by oberobic(2304) (Show Source): You can put this solution on YOUR website!
B = bank charges
B = 5x + 800 cents
.
C = credit union charges
C = 8x + 200 cents
.
So, the credit unit slope is 8, which is much steeper than the bank's slope = 5.
.
Finding the point where they cross will tell you where to keep your checking account.
.
The point where they cross will be:
5x + 800 = 8x + 200
3x = 600
x = 200
.
If you write more than 200 checks per month, the credit union is more expensive.
if you write fewer than 200 checks per month, the bank is more expensive.
.

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