<u>Answer:</u>
37 minutes
<u>Step-by-step explanation:</u>
Lena has 20 dollars. 20 - 12.23 = 7.77
Lena has $7.77 dollars left.
We divide this by .21 to see how many minutes her call was.
7.77 ÷ .21 = 37
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Answer:
<u>7y +2x</u>
Let x = the number of weeks
Hope this helps!
Answer:
Step-by-step explanation:
Give data:
for 95% confidence interval
from standard z- table
confidence interval for P_1 and P_2 is
confidence interval is