Question 422644
{{{5 = (1+r)^3}}}
Exponential functions are equations where the variable is in the exponent. So your equation is not an exponential function. It is what is called a polynomial equation and I have changed the category of this problem to reflect it. Posting problems under the right category may lead to a quicker response from tutors because some tutors like doing certain types of problems and just look for problems within certain categories.<br>
To solve your equation is fairly simple. We just have to find a way to strip away the exponent and the 1. We can eliminate the exponent by finding the cube root of each side:
{{{root(3, 5) = root(3, (1+r)^3)}}}
The cube root of the perfect cube simplifies:
{{{root(3, 5) = 1+r}}}
Now we just add -1:
{{{-1 + root(3, 5) = r}}}
And we're done!