What is the average rate of change from x = 1 to x = 3

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

Guys i really need or i have to stay late up night

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')