ANSWER
The algebraic expression that is a polynomial with a degree of 2 is

EXPLANATION
The degree of a term of a polynomial is the total sum of the exponents of the variables in each term.
The highest degree of the polynomial is considered the degree of the polynomial.
For first option,

the highest degree is 3.
The second option is,

This polynomial also has a degree of 3.
The third option is,

This last option has a degree of 2.
Therefore the correct answer is option C.
Answer: sunk cost
Step-by-step explanation:
In business, sunk cost refer to money that has already been spent and cannot be recovered such as payment for rent, production machineries etc.
"A scale factor is a number which scales, or multiplies, some quantity. ... In the field of measurements, the scale factor of an instrument is sometimes referred to as sensitivity. The ratio of any two corresponding lengths in two similar geometric figures is also called a scale factor." (not my wording but i hope this helps)
Answer:
12 over 15 and 1 over 15 i think
Step-by-step explanation:
Just plug the x and y values in, if you do so, you would see that the answer is (2,-1)