Respuesta :

Answer:

Option B -49

Step-by-step explanation:

-(7^-3)(7^5)

-1/7^3×7^5

-7^2

-49

So option B is correct

Answer:

B

Step-by-step explanation:

-(7^-3) = -1/343

(7^5) = 16807

16807*-1/343 = -49