Question

Molly orders necklace kits online. The cost of the necklace kits can be represented by a linear relationship. Molly's order of 3 kits cost $12.50. Another order of 5 kits cost $17.50. Molly decides that the kits cost $5 each. Is she correct? Explain.

Answer 1

Answer:

4b + 3n = $23.50

5b + 2n = $21.50

let's multiply the first equation by 2, and the second by 3:

8b + 6n = $47.00

15b + 6n = $64.50

subtract 1 from 2:

7b = $17.50

b = $2.50

back to first equation:

4($2.50) +3n = $23.50

3n = $13.50

n= $4.50

one of each total $7.00

Step-by-step explanation:

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