# Math Help

The following table shows the price charged by a local courier company to collect and deliver packages.

# of packages Cost (\$)
1 15
2 17
3 19

What is the cost to have b packages collected and delivered?

Extend the pattern to find the cost of 8 packages collected and delivered.

Why do you think it costs \$15 to collect and deliver one package but only \$17 to collect and deliver 2 packages?

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1. 15 + 2b = c

15 + 2(8) = 31

What do you think?

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2. I don't know..

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3. How about: Why do you think it costs \$15 to collect and deliver one package but only \$17 to collect and deliver 2 packages?

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4. How many trips to your door does the delivery person leave one package? How many trips do s/he make to deliver 2 packages at the same time?

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5. What do you mean?

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6. When a delivery person delivers one package, how many trips does s/he make from the truck to your door?

When a delivery person delivers two packages at the same time, how many trips does s/he make from the truck to your door?

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7. 10?

5?

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9. 13 for the drive and 2 for each package.
c = 13 + 2 n

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10. I goofed. Go with Damon's answer.

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