Answer:
Step-by-step explanation:
8) B(x) = [tex]5^{x +1}[/tex]
[tex]5^{x + 1} = 3125 \\\\5^{x +1} = 5^{5}\\\\[/tex]
Compare the exponents,
x + 1 = 5
x = 5 - 1
x = 4
[tex]10)2^{x-4}=512\\\\2^{x -4} = 2^{9}\\\\[/tex]
Compare exponents,
x - 4 = 9
x = 4 + 9
x = 13
