2000 AMC 10 Problem 4

Chandra pays an on-line service provider a fixed monthly fee plus an hourly charge for connect time. Her December bill was \$12.48, but in January her bill was \$17.54 because she used twice as much connect time as in December. What is the fixed monthly fee?

\textbf{(A) } 2.53 \qquad\textbf{(B) } 5.06 \qquad\textbf{(C) } 6.24 \qquad\textbf{(D) } 7.42 \qquad\textbf{(E) } 8.77$

Full credit goes to MAA for authoring these problems. These problems were taken on the AOPS website.