Fin volunteers at the local pet shelter with his friends Conor and Tiah. His friends each volunteer 1.5 hours longer than Fin. The three friends volunteer for a combined total of 12 hours. Let x represent the number of hours that Fin volunteers. Which is the equation that would answer this question?
x+ 2x +1.5 = 12
x+x+x+1.5 = 12
x+ 2(x+1.5) = 12
x+ (2x +1.5) = 12