The answer is she as 21 cookies left to sold until she is done in the fundraiser that her school is having.

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Hope you could get an idea from here.
Doubt clarification - use comment section.
D) bc 15% of 1000 is 150 and 1000-150 is 850.
Answer:
Buddy the dog has 18 bones, but he was bad so his owner took some away. Buddy is left with 12 bones. How many bones did his owner take away?
Step-by-step explanation:
Step 1: Identify your varaibles. Buddy's original bones, 18. Buddy's bones after his owner took some way, 12. The bones that his owner took away, X
Step 2: set up your equation. X = 18 - 12
Step 3: solve for x. 18 - 12 = 6
Step 4: Answer the question in contect. His owner took away 6 bones.
Jesus go in google and search it up