Tell why these expressions are not polynomials

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m

What is the solution to the equation below? 3/x-2+6=square root x-2 +8

1. how do you convert the repeating, nonterminating decimal 0. to a fraction? explain the process as you solve the problem.