A rental car agency charges $13 per day plus 12 cents per mile to rent a certain car. Another agency charges $18 per day plus 8 cents per mile to rent the same car. How many miles per day will have to be driven for the cost of a car form the second agency?

You need to proofread your post. It does not make sense. You have omitted something.

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To find out how many miles per day will have to be driven for the cost of a car from the second agency, we need to determine at what point the cost from both agencies is equal. Let's represent the number of miles driven per day as 'm'.

For the first rental car agency, the cost is $13 per day plus 12 cents per mile. So the cost can be calculated as:
Cost = $13 + $0.12 * m

For the second rental car agency, the cost is $18 per day plus 8 cents per mile. So the cost can be calculated as:
Cost = $18 + $0.08 * m

To find the point where the costs are equal, we need to solve the equation:

$13 + $0.12 * m = $18 + $0.08 * m

Let's solve for 'm' in this equation:
$0.12 * m - $0.08 * m = $18 - $13
$0.04 * m = $5
m = $5 / $0.04

Simplifying:
m = 125

So, in order to have the same cost from the second rental car agency, the car would need to be driven 125 miles per day.