### Home > PC > Chapter 2 > Lesson 2.3.7 > Problem 2-156

2-156.

Jack makes $5/hr for the first six hours on the job and then $8/hr after that. Explain why *J*(*t*), Jack’s earnings after he works *t* hours, is: Homework Help ✎

For the first six hours, Jack makes $5/hr, meaning at the end of six hours, he has earned $30. For anytime after six hours

(where he has already earned $30) he adds to the $30 by making $8 times the number of hours worked over six hours.