Table: celeb_dance_scores
Columns: couple
week_1
week_2
week_3
week_4
week_5
week_6
week_7
week_8_final

Question: How many week 2 scores have a week 7 score of 40 + 40 = 80?
SQL: SELECT COUNT("week_2") FROM celeb_dance_scores WHERE "week_7" = '40 + 40 = 80'

Question: What is the smallest week 3 score?
SQL: SELECT MIN("week_3") FROM celeb_dance_scores

Question: Which couple had a week 2 score of exactly 23?
SQL: SELECT "couple" FROM celeb_dance_scores WHERE "week_2" = 23