What is the square root of 2800 : )

How do u write a function for the reflection across the y axis

Jared had 3/7 of the minutes on a family phone plan remaining for the month. the plan is shared by 2 people. if divided equally what portion of the minutes remaining on the phone plan would be avalible for each person

He factorization of 8x3 – 125 is (2x – 5)(jx2 + kx + 25). what are the values of j and k?