Plz help me as quick

Evaluate the integral below by interpreting y=f(x) it in terms of areas in the figure. A1 The areas of the labeled regions are A3 O A1= 8, A2=4, A3=2 and A4=1 3 5 A4 A2 7 10 V f(x) dx (figure is NOT to scale) o V = Enter your answer as a whole number