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avatar+191 

Hi everyone, 

 

The cost of a car is given by the following function 

 

C(x) = 0.3 + 100 

 

Where x is the amount of miles driven during the duration of the rental, and C(x) is the total cost to rent the car in dollars. 

 

1. find vertical intercept and what it means int he context of the probleme 

I actually find the interecept which is 100. However I have no idea how to explain what does it means in the context ? 

 

 

2. How far could you drive the car if you have $350 to spend on the rental ?? Any idea how to resolve this car issue ? 

 

Thank you so much for help ! 

Best, 

Thalys 

 
 Oct 30, 2015

Best Answer 

 #1
avatar+129845 
+10

I think the function is

 

C(x) = 0.3x + 100

 

The 100 is the "fixed cost"....in other words.....it costs you $100 before you even drive the first mile.....!!!!!.....so, on the graph of the function, we would have the point (0. 100)   = 0 miles driven = $100 cost

 

(2)   Set the function = 350 and solve....so we have

 

 

350  = 0.3x + 100   subtract 100 from both sides

 

250  = 0.3x   divide both sides by 0.3

 

x = about 833.33  miles.....this is how far you can drive for $350.......!!!!!

 

 

cool cool cool

 Oct 30, 2015
 #1
avatar+129845 
+10
Best Answer

I think the function is

 

C(x) = 0.3x + 100

 

The 100 is the "fixed cost"....in other words.....it costs you $100 before you even drive the first mile.....!!!!!.....so, on the graph of the function, we would have the point (0. 100)   = 0 miles driven = $100 cost

 

(2)   Set the function = 350 and solve....so we have

 

 

350  = 0.3x + 100   subtract 100 from both sides

 

250  = 0.3x   divide both sides by 0.3

 

x = about 833.33  miles.....this is how far you can drive for $350.......!!!!!

 

 

cool cool cool

CPhill Oct 30, 2015
 #2
avatar+191 
+5

Thank you for your help, 

 

I was lost about the both side, I just did it again and got it right ! 

 

Thank you so much ! I really appreciate ! 

 
 Oct 30, 2015
 #3
avatar+129845 
+5

No prob.......

 

 

cool cool cool

 Oct 30, 2015

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