Final answer:
To determine if Edward's account balance is greater than Ciera's account balance after d days, set up an equation to find the value of x when their balances are equal. Then substitute it into the equation to check if Edward's balance is greater after d days.
Step-by-step explanation:
To determine if Edward's account balance is greater than Ciera's account balance after d days, the first step is to calculate how many days it would take for their account balances to be equal.
Let's assume it takes x days for their account balances to be equal. In x days, Edward would have spent 4.50 * x and Ciera would have spent 3.50 * x.
So, we can set up the equation 60 - 4.50 * x = 44 - 3.50 * x to find the value of x. Once we have the value of x, we can substitute it into the equation 60 - 4.50 * d and 44 - 3.50 * d to check if Edward's account balance is greater than Ciera's account balance.