Find the average rate of change for f(x) = 7x + 12 on [2,8]

The year of the rat. rat rat? Find the average rate of change for f(x) = 7x + 12 on [2,8] Find the average of all numbers from 1 to 100 that end in 2. A rat in the jam. above the average and below the average. beyond average还是beyond the average? Find the average rate of change for f(x) = 1/(x+6) on the interval [0,5] Find the average rate of change for f(x) = 1/(x + 6) on the interval [0,5] Find the average rate of change for f(x) = x^2 - 6x + 9 on the interval [1,7] take the average average man in the The Year of Rat:- 翻易急!!!!!!!!!!详细点? 什么叫year of the Rat?快 A rat has nuts in the hut. 有人可以帮我么Find the average rate of change of the function   g (t)= t^2-16 over the interval a a Researchers put a price（定价） on each chore,then tried to find out how long the average person taResearchers put a price on each chore,then tried to find out how long the average person takes doing them.这句话怎么理解?为什么average pe