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GuDViN [60]
3 years ago
5

Zoe keeps track of the miles per gallon her car gets per week. She has accumulated the following data: (1, 24), (2, 24.38), (3,

24.76), (4, 25.14). What is the common difference or ratio? a. The common difference is 0.38. b.The common difference is 0.76. c.The common ratio is 0.99. d. The common ratio is 1.02. just need the answer
Mathematics
1 answer:
KIM [24]3 years ago
3 0
<span>For this case we have the following data:
 (1, 24), (2, 24.38), (3, 24.76), (4, 25.14)  
 We observe that, we have an arithmetic sequence.
 That is, we have:
 </span>an + 1 = an + d &#10;
 <span>Where,
 an + 1: next term
 an: previous term
 d: common difference.
 So we have to clear d:
</span> d = an + 1 - an &#10;
<span> Substituting any values of the table (coordinate y) we have:
</span> d = 24.38 - 24 &#10;&#10;d = 0.38<span>
 Answer:
 a. The common difference is 0.38</span>
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Step 1; The initial value is $7.69 in 1980 and the final value is $6.13 in 2008.

Difference in values = Final value - initial value = $6.13- $7.69 = -$1.56 (the negative symbol indicates that the cost has gone down with time)

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