Answer:
I would help you but I can't read the question.
Step-by-step explanation:
Set up a proportion: 3/10= x/80. Then if you multiply 10 by 8, you get 80 on both sides, But, If you do it to the top, you also have to do it to the bottom, so the anser is 3 x 8 , or 24.
The correct answer is a= -2