A project manager estimates that a project will take x hours to complete, where x > 100. The goal is for
the estimate to be within 10 hours of the time it will
actually take to complete the project. If the manager
meets the goal and it takes y hours to complete the
project, which of the following inequalities
represents the relationship between the estimated
time and the actual completion time?

A) x + y < 10
B) y > x + 10
C) y < x-10
D) -10 <y- *< 10