Solving a circuit with a resistor in series with an LC circuit
If you understand how to compute impedance, Zo at resonance and know that L//C is high impedance as a Bandpass filter.

\$Z_c=\dfrac{1}{j\omega C},~ Z_L=j\omega L\$

The Voltage gain is always unity or 0dB for this resonant circuit, unless a load R is added.

\$Voltage~ Gain = \dfrac{Z_o(LC)}{Z_o(LC)+R}\$

However if the driver was the current source of a collector in a transistor whose impedance is high >100k, then with current excitation to L//C you get voltage gain relative to emitter resistance.

Falstad Simulator 

But if you search my answers and others, you will find similar Q&amp;A's.  

I'll let you find out what the resonant frequency formula is when \$|Z_C|=|Z_L|\$

Remember that impedance ratios are the key to voltage dividers and Amplifier gain.