Question

I think the intercept is 300 but what does it mean? Carla has $300 in her bank account. Each time she goes to the ATM, she withdraws $20. The amount of money left in her bank account after x ATM withdrawals is represented by the function f(x) = 300 - 20x. What does the y-intercept represent?

Answer 1

Write the equation is slope-intercept form:
Slope-intercept form is: y = mx + b
You have f(x) = -20x + 300
The y-intercept is 300
Now read the problem again, and see what the 300 stands for. That's the answer to the question.

Answer 2

So the y intercept represents the original amount of money she had in her bank account?