HELP ME PLEASE! *IMPORTANT* ILL GIVE 70 POINTS AND BRAINLIEST Ok so write an algebraic equation in vertex form with the points: (10,6) (20,16) (40,6). ( 20,16) is the vertex.

Sara has 2 2/3 cup taco meat. she needs 1/6 cup to make one taco. how many tacos can sara make with the taco meat she has?

Identify the parent function that can be used to graph the function f(x)=3(x-9)2

Kelli swam upstream for some distance in a hour.she then swam downstream the same river for the same distance in only 6 minutes.if the river flows at 5km/hr, how fast can kelli swim in still water?