Repeat your age trick

Your mother says "To calculate your pocket money, multiply your age by itself and then double it". If your age is x years, write an algebraic expression representing your pocket money. How much do you get as pocket money if your age is 11 years.

What do you mean by "Ontogeny repeats phylogeny" ? Is it true or false? Support your answer with two evidences

A told B When I was as old as you are now, then your age was four years less than half of my present age.If the sum of the present age of A and B is 61years.What is B's present age (in years)

Repeated Idioms And Tricks|Summary