Can someone please help big grade

1foot = 12 inches; 1 yard = 3 feet

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

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =