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What is the solution to this equation? (1/4)^x+1 =31 A. -7/2 B. 2 C. 3/2 D. -2

What is the solution to this equation? (1/4)^x+1 =31 A. -7/2 B. 2 C. 3/2 D. -2
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3 votes
What is the solution to this equation? (1/4)^x+1 =31

A. -7/2
B. 2
C. 3/2
D. -2

asked
User Fceruti
by
8.8k points

1 Answer

4 votes
A. -7/2

(1/4)^x+1=31

x+1=(-1/2)logbase2(31)-1

x=(-1/2)logbase2(31)-1

x=-3.5 or -7/2
answered
User Vadim Kirilchuk
by
8.0k points
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