What percentage of goldfish will have lengths between 4.6 inches in 9.4 inches?

What are potential hypotheses (explanations) regarding why there are ecological equivalents between many metatherians and eutherians? discuss your hypothesis in terms of the processes that could lead to the current ecologies and distributions of metatherians and eutherians.

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)