Without simplifying, determine which of the following will represent a rational number. select all that apply. a.423+3√9b.423−4√8c.423×3√9d.423÷4√ 8

A is rational (A=432)
B is irrational (B=411.6862...) (non repeating)
C is rational (C=3807)
D is irrational (D=299.1061...)

these are the answers but im not sure how to tell without simplifying for this

√8 will never be rational
√9 is a whole number therefore it will come out rational in these equations

25% increaseplus i think decrease i only know increase: ((