Inverse fourier transform

Question

Assignment:

A.  A continuous time signal x(t) has the Fourier transform    X(ω) = 1/jω+b  where b is a constant. Determine the Fourier transform for v(t) = x(5t - 4).
 
V(ω)    =    1/jω+5b^e-jω(4/5)
 
V(ω)    =    1/ω+4b^e-jω(5/4)
 
V(ω)    =    1/jω+b^e-jω(4/5)
 
V(ω)    =    1/jω+5b^ejω(4/5)

B. For a discrete-time signal x[n] with the DTFT    X(Ω)  =  1/e^jΩ + b  where b is an arbitrary constant compute the DTFT V(Ω) of v[n] = x[n - 5].
 
e^-j5Ω/e^jΩ - b
 
e^-j5Ω/e^jΩ + 5b
 
e^-j5Ω/e^jΩ + b
 
e^-j5Ω/e^j5Ω + b