The Following Information Is Available for Alba Company's Maintenance Cost

The following information is available for Alba Company's maintenance cost over the last four months.
$$\begin{array} { | l | l | l | } \hline \text { Month } & \begin{array} { l } \text { Maintenance } \\\text { hours }\end{array} & \begin{array} { l } \text { Maintenance } \\\text { cost }\end{array} \\\hline \text { January } & 150 & \$ 6,000 \\\hline \text { February } & 120 & \$ 5,100 \\\hline \text { March } & 240 & \$ 8,100 \\\hline \text { April } & 210 & \$ 6,900 \\\hline\end{array}$$ Use the high-low method to estimate both the fixed and variable component of its maintenance cost.