Jeff writes comic strips for local newspaper. the number of comic strips he created is represented by the function f(x)=3x, where f(x) gives the number of comic strips ans x is the number of work hours he put in, which varies day to day. if he puts in. 3,4,7,9 work hours, how many comic stris can he write?

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,