Best Buy on Thursday reported first fiscal-quarter results that beat expectations on the top and bottom lines as the electronics retailer tries to break out of a sales slump. The company said revenue climbed slightly, driven by comparable sales growth of 2%. It reaffirmed its full-year guidance of revenue between $41.2 billion and $42.1 billion, in addition to adjusted earnings per share of $6.30 to $6.60. It expects comparable sales in the range of a decline of 1% to an increase of 1%. The