I really need help with this question thanks

Consider the diagram. which line segment has the same measure as st? rx tx sr xs

Find the vertex for the parabola given by the function ƒ(x) = −3x2 − 6x.

Determine whether the question is a statistical question. explain. 1. what is the eye of sixth grade students? 2. at what temperature (in degree fahrenheit) does water freeze? 3. how many pages are in the favorite books of students your age? 4. how many hours do sixth grade students use the internet each week? you!