Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).

[tex]\[ 7 \frac{9}{4} \][/tex]

The expression above can also be written in the form [tex]\(\sqrt[c]{a^b}\)[/tex].

For this expression:
[tex]\[ a = \square \][/tex]
[tex]\[ b = \square \][/tex]
[tex]\[ c = \square \][/tex]