Is the following number rational or irrational?
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-0.32

A rational number can be defined as any number that can be expressed or written in the p/q form, where 'p' and 'q' are integers and q is a non-zero number. An irrational number on the other hand cannot be expressed in p/q form and the decimal expansion of an irrational number is non-repeating and non-terminating.

Irrational Numbers
The rational number includes only those decimals that are finite and are recurring in nature.

The irrational numbers include all those numbers that are non-terminating or non-recurring in nature.

-0.32 = 32/100

And 32 and 100 I think are integers.

I hope this helps?

The amount used= 13.04- 1.9 = 11.14