Which algebraic of an transformation on a coordinate grid does not preserve congruence

Which of the following is the correct ratio for converting kilograms to grams

Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read?

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *