Como se hace el calculo de: 12 + 9a + 18b = * ( + 3a + )

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Diane owes $387 to her brother. if she debits her bank account $161.25 a month to pay him back, how many months will it take her to pay off the debt?

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle