Question

Suppose the linear regression line y= -0.3x 11.2 predicts the time, in minutes, it takes you to finish an obstacle course after training for x days.

About how much time would it take you to finish the course after training for

8 days?

Answer 1

8.8 minutes

Step by step explanation:

Assuming you meant "y = -0.3x + 11.2" instead of "y = -0.3x 11.2", here is the answer: (if not just let me know :) )

Since x is the variable that represents the number of days, and 8 is the number of days you will be training, let's plug 8 in for x in the equation:

y = -0.3x + 11.2 -> y = -0.3(8) + 11.2

Solving this, we get:

y = -0.3(8) + 11.2 -> y = -2.4 + 11.2 -> y = 8.8

The variable y equals the time in minutes, so our answer is 8.8.