Can i get into these schools with a 3.0 high school GPA?

I believe you might be admitted to all three schools with the credentials you've shown here. The key is the SAT, and a higher score would certainly overcome minor deficiencies in your GPA. Your score of 1500 is on the low side, but you're not far off of the average, for example, of entrants at the University of Oregon. (See source below.) Your extra-curricular activities will help, and the quality of your essay will also contribute. I would caution you, however, not to overemphasize the tragedy of losing your mom. What admissions officials will be looking for is a positive story about a young person who had a problem and is in the process of overcoming it. Making it an excuse for your GPA would be a mistake. Try to be forthright in your essay, but make it as positive as you can. The admissions folks will see the drop in your grades on your transcript, and if that coincides with the date of your mother's death, they won't need you to point it out. If it doesn't coincide, however, they may count it against you. My advice is to take the SAT again and apply to all three colleges plus some others that you are sure will accept you. Good luck!