Answer:
avg rate of change = -2/3
Step-by-step explanation:
f(x) = -1/3(x-2)²+4
f(-4) - f(2) / [-4-(-2)]
= -8 - (-28/3) / -2
= (-24/3 + 28/3) / -2
= 4/3 · -1/2
= -4/6 or -2/3
x = -12
First, you want to plug in f(x)'s value into the equation.
-2 = -x-14
Then solve for x:
x=-14+2
x=-12
28 square units or 28 units^2
