The answer is 12, 3 times 12 is 36
The answer is C, or 28.
You can plug the values into a regression calculator to find the equation. When you do this, you will get the equation y=18.001+0.3ln(x). When you substitue 19 in for y, you get that x is about 28.
Y+2=3(x+1) in point slope form
y=3x+1 in slope intercept form
