Idon't know waht this is or how it works

the last graph

Step-by-step explanation:

because the graph is proportional and it's going up (positive)

The total costof the tickets was A. $86.50

Step-by-step explanation:

Hi, to answer this question we have multiply by four the cost of one ticket ($15.75) plus the handling of each ticket ($3.50)

Mathematically speaking:  

($15.75+ $3.50) x 4 = $77

Finally, we add the shipping cost ($9.50) and we obtain the total cost of the tickets.

$77+ $9.50 =$86.50  

This cost doesn´t appear in the options.

So, assuming that option A Meant to be $86.50 instead of 96.50, the correct option is A. $86.50.