How to tell if a function is rational or irrational?

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

Hurry which expression is equivalent to 3√x^5y?

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%