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7 February, 13:40

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

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  1. 7 February, 15:15
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    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.
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