\(3^{72/100} = 3.72\) — wait, this is a notation question. \(3\tfrac{72}{100} = 3 + 0.72 = 3.72\) as a decimal, or \(\dfrac{372}{100} = 0.372\) when simplified... The answer key gives C (0.372). Note: \(\dfrac{372}{100} = 3.72\) not 0.372. Answer key may contain a typo; the mixed number \(3\tfrac{72}{100} = 3.72\).