Answer:
?
Step-by-step explanation:
Answer:
the cost is 
Step-by-step explanation:
observing the graph
we know that
For the interval of x------>
-----> the cost is 
For the interval of x------>
-----> the cost is 
For the interval of x------>
-----> the cost is 
For the interval of x------>
-----> the cost is 
In this problem we have
hours and
minutes
therefore
the value of x belong to the interval ![(3,4]](https://tex.z-dn.net/?f=%283%2C4%5D)
the cost is 
It using the slope form which is (y=mx+b), in your case -3 is the m or slope and 2 is b or the y-intersect.