Question 1 demonstrates the Commutative Property.
Answer:
Step-by-step explanation:
What is the question? Determine the unit price?
$32/(5 pounds) * (1 pound)/(16 ounces) = $0.40/ounce
Unit price
Answer:
<em>The cost of a gallon of milk changed 31%</em>
Step-by-step explanation:
<u>Percent Change</u>
Is the difference between two values of the same variable in different times or conditions, expressed as a percentage of the original value.
The formula is:

Where
v1 = original value
v2 = final value
The gallon of milk cost v1=$2.90 in 2002 and v2=$3.80 in 2018. The percent change is:


Pc = 31%
The cost of a gallon of milk changed 31%