The following sum

$\sqrt[\phantom{2}]{9+\frac{3}{n}}*(\frac{3}{n})+\sqrt[\phantom{2}]{9+\frac{6}{n}}*(\frac{3}{n})+$dots$+\sqrt[\phantom{2}]{9+\frac{3n}{n}}*(\frac{3}{n})$

$is$ a right Riemann sum with $n$ subintervals $of$ equal length for

the definite integral

${\displaystyle \underset{7}{\overset{b}{}}}f(x)dx$

where $b=$

and $f(x)=$

$Itis$ also a Riemann sum for the definite integral

${\displaystyle \underset{9}{\overset{c}{}}}g(x)dx$

where $c=$

and $g(x)=$