Find an Approximation of the Area of the Region R

Multiple Choice

Find an approximation of the area of the region R under the graph of the function f on the interval [a, b]. Use n subintervals and choose the representative points as indicated.

A) 1.54 sq units;
B) 1.77 sq units;
C) 1.9 sq units;
D) 1.4 sq units;