en la provincia de Terranova en Canadá a las 6 horas el termómetro marca menos 7 grados centígrados a las 11 horas ha subido 11 grados centígrados y desde esta hora Hasta las 17 horas ha bajado 6 grados centígrados qué temperatura se registra a esta hora

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

Find the x-intercepts of the parabola withvertex (1,1) and y-intercept (0,-3).write your answer in this form: (x1,if necessary, round to the nearest hundredth.

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