It is estimated that the annual cost of driving a certain new car is given by the formula
C = 0.39m + 2800
where m represents the number of miles driven per year and C is the cost in dollars. Jane has purchased such a car and decides to budget between $7480 and $8260 for next year's driving costs. What is the corresponding range of miles that she can drive her new car? (Enter your answer using interval notation.)