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 13th
B. July 12th
C. July 11th
D. July 14th
Answer: B
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Factor the trinomial by grouping.3x3 + 17x2 + 10x
A. x(3x + 5)(x + 2) B. x(x + 5)(3x + 2) C. 3x(x + 5)(x + 2) D. prime
Evaluate using the order of operations.-19 - (-3)(-5) + (- 24) ÷ (-4)
A. -40 B. 2 C. -28 D. 10
Find fraction notation for the ratio. You need not simplify.Of a family's $827 weekly income, $83 usually goes toward groceries. What is the ratio of the amount spent on groceries to weekly income?
A. 
B. 
C. 
D. 
Suppose that in a certain culture, the equation 
expresses the number of bacteria present as a function of the time t, where t is expressed in hours. How many bacteria are present at the end of 2 hours?The choices are rounded to the nearest whole.
A. 5,564 bacteria B. 6,009 bacteria C. 890 bacteria D. 824 bacteria E. 2,226 bacteria