Need

jasmine unfolded a cardboard box. the figure of the unfolded box is shown below:

which expression can be used to calculate the area of cardboard, in square inches, that was used to make the box?

a.2 x 6 x 6
b.6 x 1 x 1
c.6 x 2 x 2
d.1 x 6 x 6

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