help if you know it pls don't use this as a opportunity to get points cause I really need the right answers for this test or I will fail the quarter.

!! 10 ! a westbound jet leaves central airport traveling 635 miles per hour. at the same time, an eastbound plane departs at 325 miles per hour. in how many hours will the planes be 1900 miles apart?

Add the fractions and simplify 1/2+ 1/3

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?