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emmasim [6.3K]
3 years ago
13

In 1980, the average cost of a pack of cigarettes was $0.88. In 2000, the average cost was $5.31 per pack.

Mathematics
1 answer:
yan [13]3 years ago
8 0

Answer:

The average rate of change of the cost of a pack is 22 cents per year.

Another name for the average <em>rate of change</em> is <em>slope</em>.

Step-by-step explanation:

The average rate of change of the cost of a pack (r), in monetary units per year, is equal to the change in the average cost of a pack (\Delta c), in monetary units, divided by the change in time (\Delta t), in years. Then, the average rate of change is:

r = \frac{\$\,5.31-\$\,0.88}{2000-1980}

r = \$\,0.22\,\frac{1}{yr}

The average rate of change of the cost of a pack is 22 cents per year.

Another name for the average <em>rate of change</em> is <em>slope</em>.

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Katyanochek1 [597]
Answer:
Step-by-step explanation:
Assuming that for each option, you play the same number of games,x
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y = 20 + 2x
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Option B is to pay $4 each time you go. It means that
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To determine how many games will be played before cost of option A equal to the cost of option B, we would equate y to z. It becomes
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3 years ago
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Yanka [14]
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7 0
3 years ago
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3 years ago
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