The equation that shows the miles Andrea drove is $104 = $50 + $3x.
The total cost of renting the moving truck is a function of the cost to rent per day and the total miles driven. The cost to rent the truck per day is the fixed cost while the cost per mile is the variable cost.
Total cost = cost to rent per day + (cost per mile x total mile driven)
$104 = $50 + $3x
To learn more about fixed cost, please check: https://brainly.com/question/25879561
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