Find the greatest common of the following monomials 49a4b3 21a4b5

Will give brainliest summations with algebraic expressions image shown

Find the vertex of the function given below y=x^2-6x+1

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.