Find the mistake and show the correct steps and solution

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?