You first have to distribute the negative to the second pair of parenthesis. So the new equation would be 2n-4-4n+3. Next you combine like terms. So your final answer is -2n-1.
Do you mean the cost per ounce?
Then that would be $0.1496, or rounded to the nearest cent, 15 cents a ounce.
The equivalent expression of
is 
<h3>How to determine the
equivalent expression?</h3>
The expression is given as:
1 minus StartFraction 1 Over x EndFraction divided by 2
Rewrite properly as:

Express the division as product

Evaluate the product

Take the LCM

Hence, the equivalent expression of
is 
Read more about equivalent expression at:
brainly.com/question/27911936
#SPJ1
The interest rate offered would decrease. The federal reserve sets the rates to help prevent inflation, deflation etc
A or B think it's A tho not sure