Acarpenter uses 3 hinges on every door he hangs. he hangs 4 doors on the first floor an x doors on the second floor. if he uses 36 hinges total, how many doors did he hang on the second floor

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.

Mr. jones determined that the equation y = 98 - 16/5 x could be used to predict his students' unit test scores, based on the number of days, x, a student was absent during the unit. what was the meaning of the y-intercept of the function? (by the way the 16/5 is a )