Which of these expressions is equivalent to the following: 2(x+3)%0D%0A2%0D%0A(%0D%0A%0D%0A+%0D%0A3%0D%0A)%0D%0A %0D%0A%0D%0AI 2x+3%0D%0A2%0D%0A%0D%0A+%0D%0A3%0D%0AII 2x+6%0D%0A2%0D%0A%0D%0A+%0D%0A6%0D%0AIII (x+3)+(x+3)%0D%0A(%0D%0A%0D%0A+%0D%0A3%0D%0A)%0D%0A+%0D%0A(%0D%0A%0D%0A+%0D%0A3%0D%0A)%0D%0AIV x+x+3+3

The expression equivalent to 2(x+3) is II: 2x+6.