For the given question, the summation that represents the money in account is:

The principal amount if compounded annually, the formula that represents the amount to be received after n years is:
where A is the amount received after compounding, P is the principal, r is the rate of interest and t is the tenure.
<h3>Solution:</h3>
Given:
Annual interest rate(r) is 5.5%
Principal is(P) $300
Tenure is(t) 10 years
On substituting the values in the formula 
The amount received after compounding at the end of 1 year will be:

Similarly, the amount to be received after 2 years will be:

The amount received after 10 years will be:
upto 10 years
Therefore the summation that represents the money in account after 10 years is:

Learn more about compound interest here:
brainly.com/question/25857212
Elasticity of demand is a measurement used in economics to show how people respond and demand a product or service when nothing but the price changes.
If Walmart were to discount a shoe by 25% and the demand of the shoes is two pair, sales would increase by 50%. People are purchasing two pairs at this price and receiving 25% off of each pair.
Answer:
The correct answer is letter "B": predatory pricing.
Explanation:
Predatory pricing refers to companies setting prices below the average level in an attempt to wipe out competition. In the beginning, consumers may benefit from the low prices but after the competition has disappeared, the predatory company raises the prices, but, in this scenario, consumers do not have substitutes from where to choose. The predatory company became a monopoly.
Predatory pricing practices are forbidden by the Federal Trade Commission (FTC) in the U.S.
Answer: Trade associations are non-profit organizations whose primary purpose is to <u>provide different learning tools for businesses in a particular industry.</u>