What Is the Value Of $y ^ { \prime }$ When X = 3, If the Equation of the Regression

Multiple Choice

What is the value of $y ^ { \prime }$ when x = 3, if the equation of the regression line is $$y ^ { \prime } = 23.1 - 3.8 x ?$$

A) 4.73
B) 5.29
C) 34.5
D) 11.7