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charle [14.2K]
3 years ago
13

2=(1+r/100n)^nt

Mathematics
1 answer:
klasskru [66]3 years ago
5 0

Answer:

a) Log ( 2 ) = 4t Log ( 83/80 )

b) 4.7 years

Step-by-step explanation:

Attached below is the detailed solution

<u>a) exponential statement in log form for an investment at 15% quarterly </u>

Log ( 2 ) = 4t Log ( 83/80 )

n = 4 ,  r = 15

<u>b) using change to base  to find double time in yr </u>

Double time in yr

t = Log ( 2 ) / 4log ( 83/80 )

= 4.7 years

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