Answer:
f(-142)
x(-0.2(x+223)
firstly we are to find f of x and this is by multiplying the f value by the x value
fx = (-142)(-0.2(x+233)
=( -142)(0.2x+-446)
=28.4x +63332
28.4x=63332
now you divide both sides by the x variable
28.4x/28.4 =63332/28.4
=-2230
I'm not sure about this answer so please make sure to ask an expert