CREATE TABLE "series_1" (
  "episode" text,
  "first_aired" text,
  "entrepreneur_s" text,
  "company_or_product_name" text,
  "money_requested" real,
  "investing_dragon_s" text
);

Question: Who were the Investing Dragons in the episode that first aired on 18 January 2005 with the entrepreneur Tracey Herrtage?
SQL: SELECT "investing_dragon_s" FROM "series_1" WHERE "first_aired"='18 january 2005' AND "entrepreneur_s"='tracey herrtage';

Question: What is the average money requested in the episode first aired on 18 January 2005 by the company/product name IV Cam
SQL: SELECT AVG("money_requested") FROM "series_1" WHERE "first_aired"='18 january 2005' AND "company_or_product_name"='iv cam';