Approximate the Area Under the Curve and Above The $x$ -Axis Using

Multiple Choice

Approximate the area under the curve and above the $x$ -axis using $n$ rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.
- $f(x) =2 x+3$ from $x=0$ to $x=2 ; n=4$

A) 11
B) 13
C) 17
D) 15