# Exponents

Algebra Level 2

If $4^x= 1024$ then $(4^{x+1})(5^{x-1})=?$

A. $10^6$

B. $5^4\times 10^5$

C. $4^4\times 10^5$

D. $5^4\times 10^4$

E. $4^4\times 10^4$

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