Answer:
9.3
Step-by-step explanation:
2/.214
For this case we have the following functions:

We must subtract the functions:

We build a table of values for 

Answer:

The bottle of 100 would be lowest. $8.13 ÷ 100 lozenges = $0.08 per lozenge
X/7= -3
X= -21
Hope this helps!
<span>c. 4.6
21 X .22= 4.6
Calculating the variance requires finding the product of 21 and 22%. To make this easier we convert 22% into it's decimal form and construct the equation. To back check this answer we can use 10% of 21 voters which equals 2.1% then double that amount to reach 4.2%, knowing that we now have a close approximation of the variance we can eliminate answers a, b, and d, leaving c as the only logical choice.</span>