Asquare has a side length of 5. if another square is created by doubling the side length, what happens to the perimeter of the dilated square?

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

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =

Multiply and simplify. 2x2y3z2 · 4xy4x2 how to do?