D^2 - 4d = 3d
d^2 - 7d = 0
d(d - 7) = 0
d = 0 or d - 7 = 0
d = 0 or d = 7
Easy peasy
just subsitute I(x) for the x in the h(x) so
h(I(s))=-(2s+3)^2-4
distribute and simplify
h(I(s))=-(4s^2+12s+9)-4
h(I(s))=-4s^2-12s-9-4
h(I(s))=-4s^2-12s-13
Answer:
2v+2
Step-by-step explanation:
If you have two statements p and q and

is
true, then

is also true.
In your case, statements are p - "x is odd" and q - "2x is even".
Then

- "x is not odd" and

- "2x is not even."
Hence

sounds as: "If 2x is not even, then x is not odd".
Answer: correct choice is D.