For a line to be parallel, it must have the same slope as the first line so the slope of a parallel line would be -6.
3 * x + 2 is the expression. Or 3x + 2.
Knowing that each cookie is $3 without knowing the amount tells you you will have an x variable. So you have to use 3 * x as the $3 for each cookie and then you add 2 for the cost of the box.
Hope this helped!
Answer:
B
Step-by-step explanation:
Advance Ticket: $15
Same day Ticket: $20