Question

Harrison uses a gift card to buy only coffee at at a coffee shop. The gift card starts out with $20. The function y = 20 - 2x represents the amount of money (y) still left on the gift card after purchasing(x) cups of coffee. Identify the x-intercept and describe its meaning in this scenario.

Answer 1

Answer:

x-intercept is 10.  It means when you buy 10 cups of coffee you run out of money

Step-by-step explanation:

The x-intercept happens when y = 0

so

0 = 20 - 2x

solving for x we get  

2x = 20

x = 10

so when you buy 10 cups of coffee you run out of money