Which 30-day Pass has a Base Fare of $3?
CREATE TABLE "fares" (
  "fare_categories" text,
  "base_fares" text,
  "day_pass" text,
  "7_day_pass" text,
  "30_day_pass" text
);
SELECT "30_day_pass" FROM "fares" WHERE "base_fares"='$3';