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MAXImum [283]
3 years ago
9

The cost of DVD players has dropped by $20 each year. If a DVD player cost $189 four years ago, how much does it cost today

Mathematics
1 answer:
Karolina [17]3 years ago
4 0
It costs $189-(4×$20) which is $189-$80=$109
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Vera_Pavlovna [14]

First let's talk about the blue line.

You can see its rising so its slope is certainly positive. But by how much is it rising? You can observe that each unit it rises it goes 1 forward and 1 up so its slope is the ratio of 1 up and 1 forward which is just 1.

We have thusly,

y=x+n

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So the blue line has the equation of,

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8 0
3 years ago
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olganol [36]

Answer:

22 46 15

Step-by-step explanation:

i looked it up because i was even confused. but i think this is right. hope this helps.

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Hey!

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Answer:0

Step-by-step explanation:

6 0
3 years ago
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