*Pls Help* Which of the following expressions are equivalent to..(_)
( I can't type it but the picture is in the attachment)

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

17 in long 1.3 ft wide and 8in high what is the volume

What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove