Find the Formula and Limit as Requested $\mathrm { f } ( \mathrm { x } ) = 4 \mathrm { x } + 3$

Find the formula and limit as requested.
-For the function $\mathrm { f } ( \mathrm { x } ) = 4 \mathrm { x } + 3$ , find a formula for the upper sum obtained by dividing the interval [0,3] into $n$ equal subintervals. Then take the limit as $n \rightarrow \infty$ to calculate the area under the curve over $[ 0,3 ]$ .

A) $9 + \frac { 33 n ^ { 2 } + 37 n } { 2 n ^ { 2 } } ;$ Area $= \frac { 51 } { 2 }$
B) $9 + \frac { 36 n ^ { 2 } + 36 n } { 2 n ^ { 2 } } ;$ Area $= \frac { 54 } { 5 }$
C) $9 + \frac { 36 n ^ { 2 } + 36 n } { 2 n ^ { 2 } } ;$ Area $= 27$
D) $9 - \frac { 36 n ^ { 2 } + 36 n } { 2 n ^ { 2 } } ;$ Area $= - 9$