Cato's age is half the summer of her brothers age and six if cato is nine years old how old is her brother

In the final round of trivia competition, contestants were asked to name as many states that begin with the letter m as they could in 15 seconds. the bar graph shows the number of states the contestants were able to name. how many contestants participated in the final round of the competition?

What’s the domain of this function? fast

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r