Four students are asked to draw a parallelgram. each drew a differently-named figure

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

Me asap! what is the slope of this line? enter your answer in the box.

Ineed i been stuck on this question since yesterday