Question

se 2×=32,qual o valor de 3×-1?

Answer 1

2ˣ = 32 
2ˣ = 2⁵
x = 5
Logo:
3ˣ -1 = 3⁵ - 1 = 243 - 1 = 242

Answer 2

2^x = 32
2^x = 2^5
x = 5

3^(x - 1)
3^(5 - 1)
3^4
81

Letra D