Please help 8th time posting

Graham: -50x + 14,040

Max:  20x + 12,500

  Graham = Max

-50x + 14,040 = 20x + 12,500

   +50x +50x              

       14,040 = 70x + 12,500

          -12,500-12.500

            1,540  = 70x

               220 = x

220 minutes (3 hours 40 minutes)

PLZ MARK AS BRAINILEST:-)

this was already solved by me with a different person. if you look it up in the search bar at the top of the page, you will get the answer.

step-by-step explanation:

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,