Answer:
$13.50
Step-by-step explanation:
We can find the total bill here by multiplying $45 by 1.20, where the 0.20 represents the 20% tip:
1.20($45) = $54
Since the four friends agree to split the bill equally, each pays:
$54/4 = $13.50
Answer:
(m-(1/3))(m^2+(1/3)m+(1/9)
Step-by-step explanation:
Just use the difference of cubes
Answer:
285.5
Step-by-step explanation:
Answer:
Sample size is 
Step-by-step explanation:
Given that,
Margin of error
%
Confidence level
%
Suppose, sample proportion
i.e. 
We know that,
Margin of error 
∴ 





squaring on both side,
∴ 
Hence, the sample size is,

Hence, the correct option is 