Question

Brianna wants to buy a digital camera for a photography class. One store offers the camera for $50 down and a payment plan of $20 per month. The payment plan for a second store is described by y 15x+ 80, where y is the total cost in dollars and x is the number of months. Which camera is cheaper when the camera is paid off in 12 months? Explain.

Answer 1

Explanation:

To answer this question, we have to use the same equation for each payment plan:

1. y = 20x + 50

2. y = 15x + 80

If x = 12, answer to the first equation would be y = 290

20 x 12 = 240 and 240 + 50 = 290

And the answer to the second equation would be y = 260

15 x 12 = 180 and 180 + 80 = 260

So, the second payment plan is cheaper by 30 dollars!