Use the Information Provided in the First Two Columns to Fill

Essay

Use the information provided in the first two columns to fill in third and fourth columns of the table? What is the fixed cost?
$$\begin{array} { | l | l | l | l | } \hline \mathrm { Q } & \text { TC } & \mathrm { AC } & \mathrm { MC } \\\hline 0 & 75 & - & - \\\hline 1 & 100 & & \\\hline 2 & 120 & & \\\hline 3 & 135 & & \\\hline\end{array}$$