Odd degree, negative leading coefficient.
Find the line that goes up three for every one to the right it goes. B is the line that fits the equation.
Literally you just have to take the numbers and multiply by two. So like for #1 do 29 x 2 and then find that answer and then on a separate line write 6 x 2 and then when u have answers to those equations add them up and get ur final answer which should be 70