Which of the following situations
represents a proportional relationship?
A. A cheeseburger is $7.95 plus $ 1.00 for
each additional topping.
B. A pool fills at a rate of 90 gallons per hour.
C. A health club charges a $40.00
membership fee plus $25.00 per month.
D. A bank account begins with $350.00 and
gains $30.00 per month.