Answer:
The function best describe the linear relationship be y = 640 - 75x.
Explanation:
As given
Wanda has $640 in her checking account.
She pays her landlord $75 per week for rent.
Let us assume that the number of weeks be x.
Let us assume that the y reresented the money in the account after x weeks.
Than the function becomes
y = 640 - 75x
Therefore the function best describe the linear relationship be y = 640 - 75x.