At a concert, 2/5 of the people were men. there were 3 times as many women as children. if there were 45 more men than children how many people were at the concert

What is the value of x? 3x + (6x - 6) = 4(2x-2)

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?