The table shows the temperatures in degrees Celsius, y, inside a shed at x hours past noon. The maximum and minimum temperatures are shown. A 2-column table with 5 rows. Column 1 is labeled x with entries 3, 7, 15, 23, 27. Column 2 is labeled y with entries 20 degrees Celsius, 18.5 degrees Celsius, 14 degrees Celsius, 18.5 degrees Celsius, 20 degrees Celsius. Which equation models this data? y = 3 cosine (StartFraction pi Over 12 EndFraction x minus StartFraction pi Over 3 EndFraction) 17 y = 3 cosine (StartFraction pi Over 12 EndFraction x minus StartFraction pi Over 4 EndFraction) 17 y = 6 cosine (StartFraction pi Over 12 EndFraction x minus StartFraction pi Over 3 EndFraction) 17 y = 6 cosine (StartFraction pi Over 12 EndFraction x minus StartFraction pi Over 4 EndFraction) 17