How many more dogs are pets than horses?
Class Pets
Cat
Dog
Horse
Reptile

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

Last week , donnell practiced the piano 3 hours longer than marcus . together, marcus and donnell practiced the piano 11 hours . for how many hours did each young man practiced the piano

Explain how the quotient of powers was used to simplify this expression.