please solve both questions

Which expression best represents an approximation of f(x) da? 0 - (f ( 2 ) + $ ( 2 .5 ) + $ ( 3 ) + $ ( 3 .5 ) + f ( 4 ) + $ ( 4 .5 ) + $ ( 5 ) + f ( 5.5 ) ) O 6 - 2 (f ( 2 ) + f ( 2 .5 ) + f ( 3 ) + f ( 3 .5 ) + f ( 4 ) + f ( 4 .5 ) + f ( 5 ) + f ( 5 .5 ) ) 0 1 ( f ( 2 ) + $ ( 2.5 ) + f ( 3 ) + $ ( 3 .5 ) + f ( 4 ) + f ( 4 .5 ) + f ( 5 ) + $ ( 5.5 ) ) Of ( 2 ) + f ( 2.5 ) + f ( 3 ) + f ( 3.5 ) + f ( 4 ) + f ( 4.5 ) + f ( 5 ) + f ( 5.5 ) 0 1 ( f ( 2 ) + f ( 6 ) ) Problem 11. Suppose f(a) is a continuous function for all real numbers, and let F (x) = f (t ) at and G (x ) - f (t ) at for some fixed values a and b. What best describes the relationship between F(x) and G(x)? OF(x) = G(x) + C for some constant C. O F(x) and G() are not necessarily related. OF(x) = G(x). OF(x) G(x) if a > b