Please help me with these problems.ALL of them please

\f\fThe graph of g consists of two straight lines and a semicircle. Use it to evaluate each integral. 4 2 y = g(x) 0 4 X 7 (a) 9 (x) dx ( b ) 6 N g (x) dx12. + -/1 points SCalcET8 5.2.035. My Notes + Ask Your Teacher Evaluate the integral by interpreting it in terms of areas. (1 -x) dx Need Help? Read It Watch It Talk to a Tutor 13. + -/1 points SCalcET8 5.2.036. My Notes + Ask Your Teacher Evaluate the integral by interpreting it in terms of areas. 10 ( # x - 2 ) ox Need Help? Read It Talk to a Tutor14. -/1 points SCalct 18 5.2.05/. My Notes + ASK Your Teacher Evaluate the integral by interpreting it in terms of areas. L, (5 + V81 - x2) dx Need Help? Read It Watch It Talk to a Tutor 15. + -/1 points SCalcET8 5.2.049. My Notes + Ask Your Teacher If f(x) dx = 31 and 1 9( x ) dx = 18 , find /o [3f(x) + 49(x)] dx. Need Help? Read It Watch It Talk to a TutorFind f ( x ) = 5 for x