Question 1100500
{{{281e^(0.09t)=1120}}}
{{{e^(0.09t)=1120/281}}}
{{{0.09t=ln(1120/281)}}}
{{{t=ln(1120/281)/0.09}}}
Work that out and round to the nearest whole number.

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{{{2*281=281e^(0.09t)}}}
{{{e^(0.09t)=2}}}
{{{0.09t=ln(2)}}}
{{{t=ln(2)/0.09}}}
Work that out and round to the nearest whole number.