Please help!!!!!!!!!!

Answer:
It should be 3.6
Step-by-step explanation:
in order to get the X, both have to be equal to one another. So for Line EF to equal Line AB, 2 ÷ 2 = 1, then 1 × 3 = 3. Once again, for it to be equal you do the same thing to find X. So 2.4 ÷ 2 = 1.2, then 1.2 × 3 = 3.6!