5. Richie says that 2.141441444 ... is a rational number. Elsa disagrees.

a. Who is correct?

b. What is the likely cause of the error?

Richie is correct

Explanation:

Rational numbers are numbers that have an ending eventually, and irrational numbers are numbers that go on forever, like pi. Elsa could have thought it was an irrational number because the decimal is long but even long decimals are rational as long as they come to a stop. irrational decimals are usually indicated by a line over the numbers behind the decimal.