Question
The graph shows the earnings that Xandra's apparel store made from July to November
  1. What was the total earnings from July to November?
  2. How much money must be earned in December to have average earnings of $3100 from July to December?
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The graph shows the earnings that Xandra's apparel store made from July to November
  1. What was the total earnings from July to November?
  2. How much money must be earned in December to have average earnings of $3100 from July to December?