$\hat{y} = 2.3x + 52$; for each additional hour studied, the test score increases by 52 points

$\hat{y} = 52x + 2.3$; for each additional hour studied, the test score increases by 2.3 points

$\hat{y} = 2.3x + 52$; for each additional hour studied, the test score increases by 2.3 points

$\hat{y} = 2.3 + 52x$; for each additional hour studied, the test score increases by 52 points