Should I use my ACT or SAT score, please help!

<p>Alright my score results are as follows: 25 on ACT plus writing, and a 1700 on SAT. Are these scores equal? I would prefer to send one because of cost so which do you think I should send in? I believe the 1700 sat score should be the one I send as I have already registered it when I applied as well, and just recently took the ACT</p>