Answer and explanation:
Since Oscar charges $25 for the first hour and $15 for every additional hour or fraction of an hour, his function would be :
f(x)= 25x 0 is less than or equal to x and x is less than or equal to 1
Latoya charges $30 for the first three hours and $20 for every additional hour or fraction of an hour. The function :
f(x)= 30x
0 is less than or equal to x and x is less than or equal to 3
Given that each taught their students for 5.5 hours, their charges would be :
For Oscar,
The first hour = 25×1= $25
4.5 hours left= 15×4.5= $67.5
Total charge for 5.5 hours= $67.5+$25= $92.5
For Latoya,
The first three hours= 30×3=$90
2.5 hours left= 2.5×20= $50
Total charge for 5.5 hours= $90+$50= $140
Therefore Latoya will charge $47.5 more to tutor for 5.5 hours.