Answer:
18
Step-by-step explanation:
Evaluate g(2), then substitute the value obtained into f(x)
g(2) = 2² - 1 = 4 - 1 = 3 , then
f(3) = 2(3)² = 2(9) = 18
C
8i
√-64 = i√64 = 8i
3.4545
If I'm right it could be C. IF I'M RIGHT, I'm not totally sure but I hope this helps.
letter b