Question

exponencial (1/2)^x=(1/16)

Answer 1

(1/2)^x = (1/16)   >>>> 16 = 2^4  

(1/2)^x = (1/2^4)

[(2^-1)^x] = [(2^4)^-1)

2^-x = 2^-4

-x = -4

x = 4