Ain’t is in fact a word. Tell her to look it up in the marium Webster dictionary. It’s a contraction for; am not, are not, or is not.
Even though Elvis Presley died in 1977, his music is still popular to this day, along with the fact that Graceland in Memphis was his home.
The House of Representatives is based on population.
This happens quite a lot in verbs e.g run to running. It is because you double the last consonant in a one-syllable noun for it to become a verb. (Keep in mind there are exceptions to this rule.)