Almost any situation where there is an unknown quantity can be represented by a linear equation, like figuring out income over time, calculating mileage rates, or predicting profit. Many people use linear equations every day, even if they do the calculations in their heads without drawing a line graph.
Step-by-step explanation:
Medical billers use math to process bills and inform insurance companies about any pending charges for a patient's services. They need to find out the amount insurance companies will pay to cover a patient's bills. If the insurance claim is accepted, they make a payment to the healthcare provider.
