Which two components must a vector quantity have? a) force and speed b) acceleration and direction c) direction and velocity d) magnitude and velocity

y= .5x+15

see attached graph

They are charging $.50 per mile.   That is the slope.  

The y intercept in the flat fee or $15

Step-by-step explanation:

Let x be the number of miles driven

  Let y be the total cost for the day.

They are charging $.50 per mile.   That is the slope.

This is the change in y over the change in x (.5/1)  Go up .5 and to the right 1.

The y intercept in the flat fee or $15

This is the point where it crosses the y axis (x= 0)

We can write this in the form

y= mx+b

y= .5x+15