jadexxx9 jadexxx9 31-03-2021 Mathematics contestada If a(x) = -9 - 2x, what is an equation for a-'(x)? O A. a-1 = -x - 7 O B. a-'(x) = 2 - 9 d C. 1 a (2) 1 -9 - 2:3 о D. 1 - 9 a = 2