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pashok25 [27]
3 years ago
6

Jeanne went shopping. She bought 3 DVDs for $12 each. She also bought 4 books for $9 each. Jeanne had a coupon for $10 off her t

otal purchase. Write an expression to find the final cost. What was the final cost for Jeanne's purchase?
Mathematics
1 answer:
Leya [2.2K]3 years ago
8 0

Answer:

EXPRESSION:

((12×3)+(9×4))-10

FINAL COST:

$62

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Answer:

The correct option is (d)-He wrote commutative instead of associative in Step 2.

Step-by-step explanation:

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(6.2 − 1.6) − 4.4 + 7.8

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(6.2 − 1.6) − 4.4 + 7.8

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Step 3: Simplify

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Step 4: Use commutative property

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Hence, the wrong step is step 2. He wrote commutative instead of associative in Step 2.

Therefore, the correct option is (d)-He wrote commutative instead of associative in Step 2.

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