What is the area, rounded to the nearest tenth of square inch, if an equilateral that has a perimeter of 24 inches?

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5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

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