Solve the equation (2^7 = 8^{5x})

A.
(frac{5}{8}) 
B.
(frac{8}{3}) 
C.
(frac{3}{2}) 
D.
(frac{15}{4})
Correct Answer: Option B
Explanation
(2^7 = 2^{3(5x)}Rightarrow 7 = 3^{5x} Rightarrow 7 15 – 3x\
Rightarrow 8 = 3x Rightarrow x = frac{8}{3})