Factor the trinomial or state that the trinomial is irreducible.20x2 + 31x + 12
A. (4x + 3)(5x + 4)
B. (4x - 3)(5x - 4)
C. irreducible
D. (20x + 3)(x + 4)
Answer: A
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Multiply or divide. Simplify, if possible. Assume all variables and radicands represent nonnegative real numbers.
(
+ x
)
A. 
+ x
B. x + 
C. 45x
D. 15 + x
Solve the problem.You have just graduated from college and purchased a car for $9,000. Your credit limit is $16,000.Assume that you make no payments and purchase nothing more and that there are no other fees. The monthly interest rate is 13%. Write an exponential equation to determine how much you will owe (represented by y) after x months with no more purchases or payments.
A. y = 9,000(1.13)x B. y = 16,000(1.87)x C. y = 16,000(1.13)x D. y = 9,000(1.87)x
Use the figure to answer the question.The weights (in pounds) of a group of high school students are listed below in a stem-and-leaf plot.
What is the difference between the lowest and highest weights?
A. 53 B. 98 C. 60 D. 61
Find a value for the constant a so that f(x) = ax2 models the data. 
A. a = 
B. a = 4
C. a = 
D. a = 9