Math formulas to know?

<p>So I just got my ACT score- </p>

<p>I had:</p>

<p>English: 27
Math: 21!
Reading: 26
Science: 23
Composite: 24</p>

<p>I'm taking the ACT wednesday because I go a high school in Illinois and I'm hoping to increase my math score so I could get a composite of 26 or higher. Any important formulas/strategies that will help? Any tips are welcomed!</p>

<p>Thank you in advance :)</p>