6x^3 + 5y^3 + 7y
So the third option.
Roxy: 42/9 = 4.67
Jordan: 79/18 = 4.39
Rickie: 123/27 = 4.56
Jordan has the lowest number of strokes per hole
Answer
Jordan

Start by dividing both sides by 3. Then take the square root of both sides. Then subtract 3 from both sides and divide by 2.