How do i find the midpoint with a chart invoking the Class, Class Boundaries, And Frequency?

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

If there are 3.281 feet in 1 meter, how many inches are in one centimeter

Mr. vector door is buying two new cowboy hats all together the hats cost $75.12 the second heart cost twice as much as the first hat what is the price of the more expensive at round to the nearest hundredth