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 14th
C. July 13th
D. July 12th
Answer: D
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Use a calculator to perform the operation. Express your answer in scientific notation.0.0000725(0.00473)(2,450,000,000)
A. 8.40 × 102 B. 8.40 × 107 C. 8.40 × 10-14 D. 8.40
Solve the equation.x2 + 6x - 55 = 0
A. 11, -5 B. 11, 5 C. -11, 1 D. -11, 5
Graph the quadratic function. Determine the vertex, find the equation of the axis of symmetry, find any x- and y-intercepts, and state the domain and range in interval notation.f(x) = -11x2 - 2x - 12
A. vertex: 
axis of symmetry: x = 
x-intercept: none; y-intercept: 12
domain: (-?, ?); range: 
B. vertex: 
axis of symmetry: x = - 
x-intercept: none; y-intercept: -12
domain: (-?, ?); range: 
C. vertex: 
axis of symmetry: x = - 
x-intercept: none; y-intercept: 12
domain: (-?, ?); range: 
D. vertex: 
axis of symmetry: x = 
x-intercept: none; y-intercept: -12
domain: (-?, ?); range: 
Solve the problem.Let f(x) compute the time in hours to travel x miles at 60 miles per hour. What is the interpretation of 
A. The hours taken to travel 8 miles B. The hours taken to travel 60 miles C. The miles traveled in 60 hours D. The miles traveled in 8 hours