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mihalych1998 [28]
3 years ago
13

I don't know how to do this. I have the formula but I'm confused. Help?

Mathematics
1 answer:
Rom4ik [11]3 years ago
3 0
For the lateral area, don't include the base area. For the surface area, you should include it.
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The monthly cost of driving a car depends on the number of miles driven. Lynn found that in May her driving cost was $380 for 48
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Answer:

y=0.2x+284

Step-by-step explanation:

Let  x be the distance driven, d-distance and C our constant.

Our information can be presented as:

y=mx+c\\\\450=830x+C\ \ \ \ \ \ \ \ \ eqtn 1\\\\380=480x+C\ \ \ \ \ \ \ \ \ eqtn 2

#Subtracting equation 2 from 1:

70=350x\\x=0.2

Hence the fixed cost per mile driven,x is $0.20

To find the constant,C we substitute x in any of the equations:

450=830x+C\ \ \ \ \ \ \ X=0.2\\\therefore C=450-830\times0.2\\=284

Now, substituting our values in the linear equation:

y=0.2x+284       #y=cost of driving, x=distance driven

Hence the linear equation for the cost of driving is y+0.2x+284

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