Write a ratio to represent the scale used in the drawing

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5

Find the length of the diagonal of the rectangle. round your answer to the nearest tenth. || | | 8 m | | | | 11 m

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor