Checking account A charges a monthly fee of $10 and a per check fee of $.10 and checking account b charges a monthly fee of $12 and a per check fee of. 05. How many checks would a person have to write for the two accounts to cost the same

We need to establish a formula where the costs of both accounts are equal.

For account 1, we have a fixed cost of 10 and a variable cost of. 10 we would write the cost formula as. 1x+10

For account 2, we have a fixed cost of 12 and a variable cost of. 05, we write this formula as 12 +.05x

Set the two formulas equal to each other

.1x+10 = 12+.05x

Solve for X

.05x = 2

x = 40

Someone would need to write 40 checks to make the two checking accounts equal.