Answer:
a. At lower levels, management have fewer controllable costs
Explanation:
The opposite is true, lower-level management have more controllabe costs than higher level management because top management focuses on the general strategy of the firm, while lower management focuses on the specific production processes. 
It is in these specific production processes that many controllable costs arise. A production line supervisor (part of lower-level management) can directly control some variable costs such as energy used, amount of input, or even work hours.
 
        
             
        
        
        
Answer:
a broker who buys and sells securities on a stock exchange on behalf of clients.
it's the one that says person who buys or sells equities
 
        
             
        
        
        
Answer:
Quantitative
Explanation:
The reason is that a good research report includes qualitative and quantitative research. Qualitative research is non numerical data and it give information which helps in meaning making whereas the quantitative research is a research in which the researcher tries to find the numerical relation using quantifiable data, which is investigated through number of means which includes use of mathematics, principles, etc techniques to extract data. So the qualitative research is done here and the only thing the company requires is quantitative data.
 
        
             
        
        
        
Answer:
b. 2018 net income is overstated by $750
Explanation:
As the ending inventory is overstated the COGS will be understated thus, the income was overstate as well. Because the expenses reduced from the sales revenues were lower than correct.
Also we can deduct the same logic considering the accounting equation
Assets = liab + equity
if asssets are 750 higher than it should, then Equiy is higher as well
+750  = +750
Equity is affected for the net income and dividends. Thus, we can also conclude the net income is overstated by 750