I need help and steps with this please TwT

ans=-1

Step-by-step explanation:

we know that two negatives result in a positive

2-(-4)+(-7)

2+4-7=6-7=-1

-1

Step-by-step explanation:

Given: y = 7

Plug in 7 for y in the equation:

2 - (-4) + (-(7))

Note that, when directly next to each other:

two negative signs = positive sign

one negative and one positive sign = negative sign

two positive signs = positive sign

Simplify:

2 - (-4) + (-(7)) = 2 + 4 - 7 = 6 - 7 = -1

-1 is your answer.

~

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,