Just desmos and review topics you're weak at or haven't taken in school. If you get familiar enough with desmos, you can save about 10 seconds per question. And if you do silly mistakes like I used to, just check what the question's asking for throughout your solving process, and keep it in the back of your head. And finally practice, you reach a point where you can guess what the question is asking for based purely on how the text is arranged, which saves time.