PLEASE HELP!! Alice's bank account showed a balance at the beginning of the month of $180. She spent $2.50 each day buying coffee. The amount left in her bank account, y, after x days can be represented by the equation y = 180 – 2.50x.

Describe what the y-intercept means.

a) none of these
b) The y-intercept represents the starting balance.
c) The y-intercept represents the number of days.
d) The y-intercept represents the change in the bank account per day.