Aside of a square length (x +1)meters write down an algebraic expression for its perimeter

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3

Which type of graph would allow us to compare the median number of teeth for mammals and reptiles easily