An exponent.
9X + 7
" 3x + 5 " does.
5n - 7
5x^3
a^17 x b^14 where ^ means "raised to the power of.."
Whatever expression equals 22.
9X + 7
Let the number be x and so the expression is 4x -3
exponent
125
5x5x5
The exponent.
3n + 4
" 3x + 5 " does.
5n - 7
3x^6
5x^3