Is 225 a perfect square and a perfect cube?

Interpret the following expression (5y^2-7)^3/(2y)^2

Cody ran nine miles on his first day of training. the next day he ran 1/8 that distance. how far did he run the second day?

Asequence has a common ratio of and f(5) = 81. which explicit formula represents the sequence? f(x) = 24 f(x) = 16 f(x) = 24 f(x) = 16