Answer:
An observation: Java does not support true multi-dimensional arrays; rather, it supports 1-dimensional arrays, where each element can itself be another 1-dimensional array. The difference is the way memory is allocated, where a[i][j] differs from a[i,j]. 
Explanation:
 
        
             
        
        
        
Answer:
The answer to this question is given below in the explanation section.
Explanation:
The value stored by a variable can be changed after it is assigned(true).
The value of a variable can be changed after it is assigned, for example:
int a=10;
and we can change the value of variable a in letter program such as:
a=15;
Variables are a name for a spot in the computer's memory (true).
it is true, because the variables value stored in the computer's memory and we can access theses values by their name (variable name). so Variables are a name for a spot in the computer's memory.
Variable names can be words: such as temperature or height (true).
Yes, the variable name can be words such as height, width, temperature etc. 
The value stored by a variable cannot be changed after it is assigned (false).
It is noted that the value stored by a variable can be changed after it is assigned. However, it is noted that is some programming language, you can't change the value of static variable. 
 
        
             
        
        
        
I'd suggest he uses 
LOOKUP Function. 
You can use the LOOKUP function when you need to look in a
single column or row and find a value from the same position in a corresponding
column or row. We have a much improved VLOOKUP that can also be used to search
one row or column or multiple rows and columns.
 
        
        
        
Since Betty is applying for a software analyst role, she should specialize in INFORMATION TECHNOLOGY.
<span>Information technology or IT is defined as the study or use of systems in computers and telecommunications for storing, retrieving, and sending information.
</span>
Betty's role as a software analyst  would be to:
1) <span> study the </span>software<span> application domain,
2) prepare </span>software<span> requirements and specification (</span>Software<span> Requirements Specification) documents.
3) be the link between the software users and software developers.</span>