Unit 2

Astronauts: To reach the moon, scientists needed to set up and solve a complex system of equations. One set of equations represented rockets movement through space. The other tracked the movement of the moon as it circled the Earth. The solution to the system was the time and place where rocket would meet the moon.

Hospital Monitors: Hospital Monitors that track patients heart rate, blood pressure, EKG, oxygen saturation. These all are examples of functions.

Medicine: When calculating medicine doses, they are calculated based on people's masses. A small child will receive less than a heavier adult. Sometimes, doctors also need to substitute different medicines for others based on the patient. These substitutions also require algebraic calculations.

Salary & Commission: The salary is the base amount the person makes regardless of the number of sales they make. Commission is the amount someone makes per sale. Together this is a linear function.

Service Companies: Service companies also often charge a fee per hour as well as an up front service fee.