After completing her residency, an obstetrician plans to invest $25,000 per year at the end of each year into a low-risk retirement account. She expects to earn 5 percent for thirty-five years. What...

After completing her residency, an obstetrician plans to invest $25,000 per year at the end of each year into a low-risk retirement account. She expects to earn 5 percent for thirty-five years. What will her retirement account be worth at the end of those thirty-five years?

After completing his residency, an oncologist plans to invest $30,000 per year at the end of each year into a high-risk retirement account. He expects to earn 7 percent for thirtyfive years. What will his retirement account be worth at the end of those thirty-five years?