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The rental rate for a power washer has a one time fee of $50 plus $25 for each day of the rental. The graph shows points representing the total cost of the rental.  The points are (4,150) (2,100) and (0,50)

 

Which linear equation, in slope-intercept form, that models the total cost of the rental over time?

y = 50x + 25

y = 25x + 50

y = x + 50

y = 25x

y= 75x

hoiuu  Oct 23, 2018
 #1
avatar+90969 
+2

We don't need much math here, hoiuu

 

Total cost  =   Variable Cost  + Fixed Cost

 

The Variable Cost  =  25 times "x" number of days  rented   = 25x

The Fixed Cost  = 50    [ this amount is paid no matter what ]

 

So.letting the Total Cost  = y

 

y  = 25x + 50

 

Does this make sense  ???

 

cool cool cool

CPhill  Oct 23, 2018
 #2
avatar+383 
+1

Yes thank you!

hoiuu  Oct 23, 2018

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