16. [-/4 Points] DETAILS LARCALC11 4.3.047. The graph of f consists of line segments and a semicircle, as shown in the figure. Evaluate each definite integral by using geometric formulas. (4, 2) -4, -1 (a) ( RX ) ox ( b ) [RX ) Ox (d) [ RX ) Ox (e ) 1RX )I Ox (F) [LAX ) + 2] dx17. [-/4 Points] DETAILS LARCALC11 4.3.048. The graph of f consists of line segments, as shown in the figure. Evaluate each definite integral by using geometric formulas. (3, 2) (4, 2) - NW (1 1, 1) 10 11 (8, -2) (a ) "- 21( x ) dx 1b ) / " 2 1 x ) dx (c ) "3 R( x ) Ox (d) "- 21(x ) dx (e ) 21(x ) dx (f) 21(x ) dx18. [-/4 Points] DETAILS LARCALC11 4.3.059. Find possible values of a and b that make the statement true. 1 7 b f(x) dx + f(x) dx = f(x) dx -4 1 (a, b) =