After your third week, a Factor prepared-meal subscription comes with a Withings Body Comp scale that scans your body-fat percentage. Lord help me. I will admit to being afraid of scales—the kind that ...

For similar 2D and 3D shapes, there is a relationship between the length scale factor and the area, surface area or volume of the enlarged shapes. Areas increase by a factor equivalent to the length ...

Key points Check your understanding Enlarging with a negative scale factor Multiply these displacements by the scale factor. Using these values, count in the opposite direction from the centre of ...