The first, third, and sixth are correct.
You have to organize the parameters of the real-world situation that is known and unknown. Also, you have to distinguish which of them are dependent and independent. Next, you assign letters as your variables. Lastly, you make an algebraic expression by translating the relationship into the mathematics.
Answer:
the right answer is H.(1,3)
I believe its 1.8
hope this helps :)
