DO NOT DO THE WAY THE QUESTION ASK TO DO FOR ALL OF THEM. USE THE POWER OF ONE TO SOLVE EACH QUESTION DUE TOMORROW FIRST TO ANSWER PROPERLY GETS BRAINLIEST

Use the elimination method to find the solution to the system of equations. 2x - 3y = -9 -x + 3y = 6

Ana earns 2.5% simple interest on $2,000 in her savings account. she does not make any deposits or withdrawals. after 3 years, how much interest will ana have earned on her savings account?

What is the perimeter of an equilateral triangle if each side is (x+3)?