Answer:
17.86
Explanation:
You want to find y when x=8 using the equation y = 13.06 +0.6x.
Evaluation
Put the value of the variable in place of the variable in the equation, and do the arithmetic.
y = 13.06 +0.6x
y = 13.06 +0.6·8 . . . for x=8
y = 13.06 +4.8
y = 17.86
The estimated value of y for x=8 is 17.86.