Verified answer

[tex] {2}^{5x - 6} = 8 \\ 2 {}^{ 5x - 6} = {2}^{3} \\ 5x - 6 = 3 \\ 5x = 3 + 6 \\ 5x = 9 \\ x = 9 \div 5 \\ x = 1.8[/tex]

Ответ: D)