Answer:
14/2187
Step-by-step explanation:
Let us first see how many possible outcomes there are. We can to that by multiplying 9^4. This gives us 6561.
Now, we can see what are the possible outcomes that meet the requirements. We can get this by multiplying 1 • 1 • 7 • 6, which is 42.
Our fraction is 42/6561, which is 14/2187.
Hope this helped!
12 customers = 9 mintues
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Divide by 3 through
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12 ÷ 3 customers = 9 ÷ 3 minutes
4 customers = 3 minutes
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Answer: She can ring up 4 customers in 3 minutes
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I wanna say c!!! Hope that helped