Answer:
Step-by-step explanation:
To find x, the following equation is generated given the available information:
Cross multiply
Collect like terms
A pet store surveyed three groups of 5 customers to find out how many pets the customers owned. The table shows the results of t
he three samples.
Identify surveys that are likely biased. Based on the unbiased surveys, estimate the mean number of pets that the customers own.
Round to the nearest whole number.
Identify surveys that are likely biased. Based on the unbiased surveys, estimate the mean number of pets that the customers own.
Round to the nearest whole number.
1 answer:
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Let
x--------> the number of children
y------> the number of teenagers
z------> the number of adults
we know that
------> equation A
-----> equation B
-------> equation C
Substitute equation C in equation A and equation B
--------> equation D
--------> equation E
Multiply equation E by
--------> equation F
Adds equation D and equation F
therefore
<u>the answer is the option</u>