Alright here are the answers in order!
a) Independent
b) Dependent
c) 0.9
d) 0.5
I hope this helps!
A=-4 , b=0 , c=4 so it will be f(-4)=0
f(0)=0 f(4)=0
Let i = sqrt(-1) which is the conventional notation to set up an imaginary number
The idea is to break up the radicand, aka stuff under the square root, to simplify
sqrt(-8) = sqrt(-1*4*2)
sqrt(-8) = sqrt(-1)*sqrt(4)*sqrt(2)
sqrt(-8) = i*2*sqrt(2)
sqrt(-8) = 2i*sqrt(2)
<h3>Answer is choice A</h3>