Can someone help me with these please , I don’t understand how I got them wrong :/

You got it right don't worry!

Step-by-step explanation:

It's most likely because the forms can be kinda tricky. If you don't put the exact answer your teacher put as correct, then it will mark it as wrong. I'd say just ask your teacher to look it over.

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,