Write y=-5x2 + x + 1 in vertex form. O A. y=-5(x + 0.1)2 - 1.05
O B. y=5(x + 0.1)2 - 1.05
O c. y = 5(x -0.1)2 +1.05
O
D. y=-5(x - 0.1)2 + 1.05

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?

I’m really confused and need your assist me with this question i’ve never been taught

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?