Is the number 7.4343434343... rational or irrational? Explain your reasoning.

irratiional because it is repeating.  A rational number is a positive or negative whole number without fractions or decimals.

Step-by-step explanation:

7.4343 is a repeating decimal so it is irrational

Since the number sets follow this pattern of inclusions:

and , we can deduce that -1 is also a real number and a complex number (since if an element belongs to a set, it also belongs to all the supersets of its set).

So, the correct options are B and D.