I'm confused on how to go about solving this, I got to this part: 2x+y+32=20
-3y-3z=2
-3y-13z=-6
but I'm not even sure if I did that correctly or where to go next

Step-by-step explanation:

The last equation has 2 variables

If we double the first equation and subtract the second one from it, we get rid of y and then comparing the new equation with the last one we can easily solve it

Step 1

Step 2

Step 3

Then finding x

Then finding y using the first equation

The

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,