Posted by Anonymous on .
State the growth factor in each of the following situations.
Newspaper readership is declining by 7 1/3 % per year.
A bouncing ball rebounds to 1/3 of its previous height.
Dont know how to solve these fractions:\ I just hate working with fractions.

Calculus 
Steve,
If readership declines 7 1/3% each year, then the readership in year n+1 r(n+1) = (1.0733333)*r(n) = 0.926666 r(n)
So, the growth factor r = 0.926666 (or 139/150)
Similarly, for the ball, height h(n+1) = 1/3 h(n) so the growth factor is 1/3.