1) Estimate the area under the graph of f(x) = sin(x) from x =0 to x = 7, using 4 rectangles, of equal width, whose height is given by the value of the function at the right endpoint (that is using R4). A) B) " C) (V2+1)m 4 (V/2+3)n 4 4 (2V/2+1)7 4 (3\\/2+1) * 4 I) 4 372 4