Question

Can someone check my answers? Will give a medal. (Pictures in comments)

Answer 1

I can only give ahint for 4.png (as we are not allowed to give anbswers) its between 1.5 and 3.5

Answer 2

in the case of 3.png, it is obcvious that it will be x^2 + c

Answer 3

but 24x is consistent amongst the answers...hint hint

Answer 4

calculate difference between observations.. and fit into formula!