The graph of f is shown in the figure. The shaded region A has an area of 1.5, and f(x) dx = 4.5. Use this information to fill in the blanks. (Round your answer for part (f) to four decimal places.) B ( 2 ) 1 0 " (x ) ox = ( b ) (A(x ) dx = ( c ) If( * ) I dx = (P) " - 2 1 ( x ) dx = (e ) [2 + f ( x ) ] dx = (f) The average value of f over the interval [0, 6] is