Question 379360
{{{89 = 97(1-r)^8}}}.  We have to solve for r. 
{{{89/97 = (1-r)^8}}},
{{{root(8,89/97) = 1-r}}}, or
{{{1-root(8,89/97) = r}}}.  Then r = 0.0107, or 1.07%.