What is the average rate of change from week 2 to week 7(round to the nearest thousandth, if necessary

1) 2.58 , 2) 2.64 , 3) 2.68 , 4) 2.53 , 5) 2.55 , 6) 2.41 , 7) 2.46 ,8) 2.48 , 9) 2.44, 10) 2.42