Answer:
23.
Step-by-step explanation:
Replace the x by -2 and simplify:
f(-2) = (-2)^4 + 2(-2)^2 - 1
= 16 + 2*4 - 1
= 16 + 8 - 1
= 23.
Answer: 7
5+7+9=21
3 total numbers to start with so;
21/3=7
Charges what?
Unfinished...
