Hyun just turned 25 today. by her 60th birthday she would like to have $1,000,000 saved. she plans to invest equal annual payments beginning with her 26th birthday and ending on her 60th birthday. if all invested funds earn 8% annually, how much does she need to invest each year to have exactly $1,000,000 by her 60th birthday?

You have to calculate an annuity, specifically, you have to solve for the annual amount needed.  (see attached).
In the formula, the "n" stands for years.
Amount = 1,000,000 / ({[(1.08)^(35+1)]-1/ .08}-1)
Amount = 1,000,000 / ({( 15.9681718379  -1) / .08})-1
Amount = 1,000,000 / [(14.9681718379 / .08) -1]
Amount = 1,000,000 / (187.1021479733 -1)
Amount = 1,000,000 / 186.1021479733
Amount = 5,373.39

Here's a calculator to check that
http://1728.org/annuity.htm