In this question, it is given that
Gary works no more than 9 hours on weekends and gets paid $10 per hour. He works whole-hour shifts. His pay, P, is a function of the number of hours he works, n.
For one hour, he will paid $10
For 2 hours, he will paid $20
For 3 hours, he will paid $30.
Similarly for n hours he will paid
[tex]10n, 1\leq n \leq 9[/tex]
SO when n is 1, he will paid $10
When n is 9, he will paid $90.
Here range represents the range of P, which is
[tex][10,90][/tex]
