For ever bag of trail mix the local scout guide troop sells, the earn 0.45 write an expression to represent this situation

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?

John checked his watch and said that it is thursday, 7 am. what will the day and time be 2006 hours plzzz i will give you 100 points

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?