You can rent DVDs at a local kiosk for $2.00 each. An Internet company offers a flat fee of $15.00 per month for as many rentals as you want. How many DVD’s do you need to rent to make the online rental a better buy?
Model each rental with an equation:
Cost of one month’s rental online:
Cost of one month’s rental locally:
Graph each equation on the same graph
Based on the results of your graph, how many DVDs do you need to rent to make the online rental a better buy?
What is another real-life scenario in which linear equations and graphs can be used to provide a solution?