business law questions

Question 12 2 pts Dan sends an offer to Laura to sell a used computer for $350. Dan says, "If you say nothing, I will consider you to have accepted my offer." Laura does not respond. Laura has made a counteroffer. accepted the offer. none of the above. rejected the offer Question 8 2 pts Charles decides to sell his art collection in an auction "with reserve." Charles can withdraw the collection only before the auction begins. only if the bids are extremely low. any time before the items in the collection are delivered to the buyers. any time before the auctioneer announces that the collection has been sold