Question 493792
Since the number of hours is variable, let h represent the number of hours.

Our first option can be modeled by  C=25*(4)+ 10h ---> 100+10h

Our second option can be modeled by C = 15h

We want to know when option 1 is less than option 2 so form an inequality.

And note that h cannot exceed 96 (24*4) since we are working in a four day proposition.

100 + 10h < 15h 

100 < 5h 

20 < h  remember h cannot exceed 96 so,  {{{20<h<=96}}}. 

Hope this helped!