"Directions (For next 2 questions): What approximate value should come in place of question mark(?)

Описание: "Directions
(For next 2 questions): What approximate value should come in place of
question mark(?) in the following questions? (NOTE: You are not expected to
calculate the exact value).
`421-:35xx299. 97-:25. 05=?^2`

(a) 22 (b) 24 (c) 28 (d) 12
(e) 18"