PLEASE HELP WILL GIVE BRAINLIEST
Bonnie and Bobby are saving money for a vacation. Each friend starts with an amount and also saves a specific amount each week.

Bonnie created a table to show the total she has saved at the end of each week.
Weeks 0 1 2 3 4 5 6 7 8
Amount saved 12 16 20 24 28 32 36 40 44

Bobby came up with the following equation to show the total, y, he has saved at the end of each week, x. y = 12x + 4

The rate at which Bobby is adding to his savings each week is $___ more than the rate at which Bonnie is adding to her savings each week.
Possible answers: 1 , 4 , 8 , 12, 16