Solve the problem.A population of birds in a small county can be modeled by the polynomial 
where x = 1 corresponds to July 1, x = 2 to July 2, and so on. For what days does f estimate the population to be 8550?
A. July 11th
B. July 12th
C. July 13th
D. July 14th
Answer: B
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Simplify by factoring out the given factor.14s1/7 - 9s-4/7; s-4/7
A. s-4/7(14s5/7 - 9s) B. s1/7(14s5/7 - 95/9) C. s-4/7(14s5/7 - 9) D. s1/3(14 - 9s5/9)
Provide an appropriate response.The prices (in dollars per unit) for 3 video tapes are represented by the price vector: 
A video rental store orders these tapes in the quantities given by the column vector: 
Find the total cost (in dollars) of the purchase.
What will be an ideal response?
Simplify. Assume that all variables represent non-negative real numbers.
A. 8a7b8
B. 8a3b4
C. 8a3b4
D. 8b4
Find the variation equation for the variation statement.t varies directly as r and inversely as s; t = 3 when r = 27 and s = 72
A. t = 
B. t = 8rs
C. t = 
D. t = 