In 200 words, can you help me draft a summary of this case? The bank advertised rates for certificates of deposit. The customer bought a $ 14,000 certificate of deposit from the bank. When the customer went to redeem the certificate, the customer was paid less interest than the advertised rate. The bank said that the customer would have had to deposit $ 15,000 to receive the advertised rate the customer thought he was receiving, and that the advertisement was in error. There were pamphlets in the bank lobby that showed the correct rates. The customer brought suit to recover the difference between the interest paid and the interest payable under the higher, advertised rate. The general district court granted judgment to the bank and the circuit court affirmed. The court reversed and rendered judgment in the customer's favor. The court held that the newspaper advertisement constituted an offer which, when accepted, created a legally enforceable contract. The offer was clear, definite, and explicit, and left nothing open for negotiation. It did not matter that it was a typographical error; that was a unilateral mistake which did not invalidate the contract