Answer:
Step-by-step explanation:
1 find out what kind of its is
if its equivelent you might use 60 as thee angles then find out
1. 
2. 
3. 
4. (1st option) Yes; the number is written in scientific notation.
Answer:
f(3) = 6
Step-by-step explanation:
f(3) = 2(3)^2 - 4(3)
f(3) = 6