Who likes math

i'm in advanced 6th grade and 5th grade everything else

Find the given elements if matrix d:

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

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.