Look at shape G & shape H on the grid which transformation will show that shape G is congruent to shape H

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?

What is the remainder when 3x^2-x-10 is divided by x-1 -6,-7,-8, or -9

Solve the system of equations. 2x-2y=-4 and x+y=8. show work