An interview is held with a student about the importance of education for thirty minutes at a radio station. It was later amplitude modulated & transmitted to receivers on the school campus.The...

An interview is held with a student about the importance of education for thirty minutes at a radio station. It was later amplitude modulated & transmitted to receivers on the school campus.The expression below describes the transmitted signal a(z)

a(z)= Acos(16πz) where A=3cos(10πz)

a. In an expression form, express a(z) as a sum of sinusoids & determine the frequency components of the signal a(z)
b. To adequately & fully recover the signal at the receiver, determine the rate at which the signal should be sampled.
c. Determine the discrete signal,a[n] that was transmitted in a reduced form & the angular frequency  assuming the signal a(z) is sampled at ten Hertz.