<p>I wouldn’t want to speculate whether a 25 would make all that big a difference, OP. If you’re not strong in math, then you should re-think your major because not only do you have to take several calc courses but you have to use that math in every engg course and some others. Then you have to use it for the rest of your engg career.</p>
<p>I encourage you to speak to your guidance counselor and your parents about your interests and strengths & weaknesses.</p>
<p>Do study for the ACT again, because even with another major you would still benefit from raising your score. </p>