Question

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

Answer 1

Answer:

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

b) 4.7 years

Step-by-step explanation:

Attached below is the detailed solution

a) exponential statement in log form for an investment at 15% quarterly

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

n = 4 ,  r = 15

b) using change to base  to find double time in yr

Double time in yr

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

= 4.7 years