The Burger Barn near ASU has burgers that come in 3 sizes: Wimpy, Normal and Jumbo. The Wimpy size is x dollars, the Normal is $4 more than the Wimpy, and the Jumbo is $10 more than the Wimpy. Last Saturday, the Barn sold 18 Normal hamburgers and 11 Jumbo hamburgers for a total of $269. How much money is a Wimpy hamburger? Please help :(

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,