PLEASE ASAP ILL GIVE BRAINLIEST.

If f(x)=3 over x+2 - square root x-3 then f(7)=

When you dilate a figure with a scale factor of 1/2, what will the dilated figure look like?                                                                                           a: the dilated figure will have side lengths that are half the length of the original side lengths.                                                                          b: the angles in the dilated figure will be half the measure of the original figure.                                                                                c: the dilated figure will have side lengths twice the length of the original.

Explain how to convert measurements in the metric system