You're speedy and decisive, and you like it best when there is a clear correct answer. You don't mind science, and you may even like it at a little! Reading? You may be more inclined to read articles or news feeds rather than the great masterpieces of literature.
The ACT features a Science section, while the SAT does not, so your inclination toward charts and graphs could help you out.
In Math, don't worry. You may use your calculator throughout the Math sections. You'll find a bunch of Geometry questions on the test, but Geometry is fine for you!
Reading can be just a bit more straightforward than on the SAT, which you might appreciate. But you'll need to move quickly, which is your natural instinct.
Most importantly, your decisive nature may help you out, as the ACT allows about 1/3 less time per question than the SAT. Want to try your hand at a practice exam? You will receive an email shortly!