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Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)

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

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?