II need help on C.

The answer for C is not 0.13 nor 0.194 nor 0.29 nor 0.408

Suppose a protein exists in two forms: R and T. These forms are in equilibrium RT .for which K=[R][T]=10.0.R and T are in turn in equilbrium with their ligand-bound forms according to R+LRL for which kR=[R][L][RL]=2.00 and T+LTL for which kT=[T][L][TL]=0.100 Calculate the binding polynomial [R]qb. Assume [L]=1.5. For the conditions described above, calculate the fraction of R sites bound fBR For the conditions described above calculate the fraction of T sites bound fBT