Answer:
f(3) = 18
Step-by-step explanation:
f(x) = 2x^2
Let x = 3
f(3) = 2 * 3^2
= 2 *9
= 18
Answer: C. 2 6/7
Hope that helped! :)
AB=12
ED=6
AB=CD=12
BC=AD=26
ED=26-20=6