Answer:
2
Step-by-step explanation:
(-6)+(-12)=-18
(-18)+20=2
A) neither Normal, not Binomial
d (w) = 0.1w² – w+ 5
d(w) = c(w) - a(w)
= -0.3w²+2w+13 -(-0.4w²+3w+8)
= -0.3w²+0.4w²+2w-3w+13-8
= 0.1w²-w+5
A) 6 x 6 x 6 x 6
Hope this Helps!!