You will have enough space if you write on every line, avoid wide margins, and keep your handwriting to a reasonable size. You can also do the essays given in the first section of each of the tests in the Official Study Guide.
It is important to note that although these are representative samples of student ability at each score point, the set itself does not exhaustively illustrate the range of skills in Reading, Analysis, and Writing associated with each score point. It is as if a tennis player before returning the ball stopped to think about his views of the physical and mental advantages of tennis.
Take a look at the SAT Essay rubric, or guidelines, scorers use to evaluate every essay. It also shows an effective use of textual evidence. One such gem that is worth pondering is: The only thing to do with good advice is to pass it on.
Support your explanation with evidence from the passage.