If the following is a polynomial function, then state its degree and leading coefficient. If it is not, then state this fact.f(x) = 9x4 + 9x3 - 8x2 + 9
A. Degree: 4; leading coefficient: 9
B. Degree: 9; leading coefficient: -8
C. Degree: 3; leading coefficient: 9
D. Not a polynomial function.
Answer: A
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Simplify and add or subtract wherever possible.
- 8
+ 6
A. -42
B. -26
C. 26
D. -243
Factor the trinomial or state that the trinomial is irreducible.6x2 - 29x + 20
A. irreducible B. (6x + 15)(6x - 5) C. (x - 4)(6x - 5) D. (x + 4)(6x - 5)
Add or subtract. Then simplify. If a denominator has two or more factors (other than monomials), leave it in factored form. Express the answer using the denominator of the first fraction when applicable.
+ 
A. 
B. 
C. 
D. 
Solve the problem.The data below represent the average monthly cost of natural gas in an Oregon home. 
Above is the graph of 45.05 sin x superimposed over a scatter diagram of the data. Find the sinusoidal function of the form 
which best fits the data.
A. y = 45.05 sin 
+ 21.20
B. y = 45.05 sin 
+ 21.20
C. y = 45.05 sin 
+ 66.25
D. y = 45.05 sin 
+ 66.25