Joy bought pens at $120 a dozen. He sold it for $15 each. What is his profit?

Line gh passes through points (2, 5) and (6, 9). which equation represents line gh? y = x + 3 y = x – 3 y = 3x + 3 y = 3x – 3

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

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?