Jessica Migala has been a health, fitness, and nutrition writer for almost 15 years. She has contributed to more than 40 print and digital publications, including Health and Runner's World. Jessica ...
Purchasing power refers to the quantity of goods or services $20 can buy today. Inflation erodes purchasing power, making $10 buy fewer loaves of bread over 10 years. Investing in S&P 500 funds can ...
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