Answer:

Step-by-step explanation:
Step 1:
Write the expression

Step 2: Expand 

Step 3: Collect similar terms

Step 4: Factor 4 out of the expression to prove that the expression is a multiple of 4.

Answer:

Step-by-step explanation:
In order to find r we have to square both sides of the equation

The *square root* sign cancels out the *squared* sign therefore:

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Range = { 12 , 4 , -6 }
Thus the correct answer is (( A )) .
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It would be 26 cents per shell
56.04 is the answer if im correct