Answer:
[tex]x = 3.072 * 10^{-5}[/tex]
Step-by-step explanation:
[tex]x = 12*0.2^8[/tex]
[tex]x = 12 * 2.56E-6 = 0.00000256[/tex]
[tex]x = 3.072E-5 = 0.00003072[/tex]
