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Answer: odd
Step-by-step explanation:
Given
The graph of a function increases as x increases and decreases as x decreases.
This shows that the degree of the polynomial is odd
for example 
Here, the leading coefficient is positive, and the value of function increases as x increases and vice-versa.
You would plug in the y=9 into the first equation and then have the expression 9=9x-9
. After going through the first steps of solving an expression you would get 18=9x. X=2. Then you would plug in the x value into the first expression to get y=9.
Rectangular area = l*b = 1620* 68 = 110160 cm² = 11.016 m²
20/18+5/18=25/18
25/18 can be written as mixed fraction 1 7/18