Doubling the quantity of a number decreased by six is less than negative thirty-six

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

The surface area of the triangular prism is .

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?