6th grade math I mark as brainliest

Nine more than four times a number is the same as one less than twice the number. find the number?

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

What describes horizontal cross section of the right rectangle 6m 8m 5m