Hello! Let's write some important information contained in the exercise:
• $22.95 is the ,flat rate,;
,
• d ,is the number of miles of the day;
,
• $0.91 ,per mile,, so, 0.91*d;
How to express the topics above in function C(d)?
We can write the function as C(d) = $22.95 + $0.91d