An organism whose genotype is Tt is considered a organism with the genotype tt is a

purebred, hybrid
hybrid, purebred

A Tt organism is a hybrid. It has two different gene sets, dominant and recessive. The tt is a purebreds, since it’s genes are the same. For example, a father has blue eyes and a mother has blue eyes. These will make it more likely for their offspring to have blue eyes. Hope this helps!

Answergranulation;

343^x = 49^4-xx = 4-xx+x=42x = 4x = 4/2x = 2therefore x = 2