If a is a rational number and b is an irrational number, then the sum a + b is

Answer:
C: Irrational
Explanation:
the reason i chose C because when you add a rational and irrational number together you still get a repeating number which is irrational.
For Example: Take a rational number 5 and Pi
if you ad those together 5+3.1415... you still get a repeating decimal, and repeating decimals are also irrational numbers.
Hope this helps :D