Question

Claire was given a gift card for a coffee shop. Each morning, Claire uses the card to buy one cup of coffee. The amount money remaining on the card after buying x cups of coffee is given by the equation A = 45 - 3x. What is the x-intercept of the equation and what is its interpretation in the context of the problem? The s-intercept of the function is which represents

Answer 1

Gift card money remaining is

A = 45 - 3x

BUT 1 coup of coffee was buyed

So then total money is

A+1 = 46 - 3x

y = A+1 = -3x + 46

the x intercept is the point where y= 0 , it represents the number of cups of coffee that were consumed.

x= 45/3= 15