<h2>
Answer:</h2>
<u>The balance after 21 months is </u><u>$9960</u><u>.</u>
<h2>
Step-by-step explanation:</h2>
Let a₁ = 14760, a₂ = 14520, and a₂₁ be the balance after 21 months:
So we apply the given values to get the missing values:
First, we get the common difference, That is,
d = a₂ - a₁
d = 14520 - 14760
d = -240
So, we substitute the value of common difference and the known values,
a₂₁ = a₁ + (n-1)d
a₂₁ = 14760 + (21-1)(-240)
a₂₁ = 14760 + (20)(-240)
a₂₁ = 14760+(-4800)
a₂₁ = 9960
Therefore, the balance after 21 months is $9960.
Answer:
i dont understand the words of these problems
Step-by-step explanation:
Answer:
8/19
Step-by-step explanation:
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Answer:
B) Interquartile range
Step-by-step explanation:
Since there are some students that do not eat fast food at all, their amounts spent monthly would be $0. These are much different than the rest of the data, and thus are outliers.
Outliers can greatly affect the mean. This tells us the mean may not be the best measure.
Since the mean is affected by outliers, the standard deviation is not the best measure either.
Adding data points of 0 will also affect the range. This leaves the interquartile range as the better measure.