What is the EAR on the baseball card??

Comparison of returns. Baker Baseball Cards, Inc. originally purchased the rookie card of Hammerin' Hank Aaron for $24.00. After holding the card for 6 years, Baker Baseball Cards auctioned the card for $168.00. Another company, Bohenick Classic Automobiles, restores and rebuilds old classic cars. This company purchased and restored a classic 1957 Thunderbird convertible 7 years ago for $9,200.00. Today at auction, the car sold for $82,800.00 c. What is the effective annual return (EAR) on the baseball card? % (Round to two decimal places.)