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question #1 3^3+3^6

option #A: 3^9
option #B: 6^9
option #C: 0^3
option #D: 3^18

question #2 solve for x 4x=12

option #A I don't know it
option #B x=8
option #C x=3
option #D x=48

question #3 solve for x: x+7=2

option #A x=9
option #B x=14
option #C I don't know it
option #D x=-5

question #4 solve for t:

option #A t= 1
option #B t=-2
option #C t=-1
option #D t=2