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. On what day does f estimate the population to be 8550?
A. July 12th
B. July 11th
C. July 14th
D. July 13th
Answer: A
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Expand the expression using the Binomial Theorem.(x + 3y)5
A. x5 + 15x4y + 180x3y2 + 540x2y3 + 405xy4 + 243y5 B. x5 + 15x4y + 180x3y2 + 540x2y3 + 405xy4 + 3y5 C. x5 + 15x4y + 90x3y2 + 270x2y3 + 405xy4 + 243 D. x5 + 15x4y + 90x3y2 + 270x2y3 + 405xy4 + 243y5
Solve the problem.The Smiths want to put down a rectangular crushed-stone driveway to their house. The driveway is 7 yards wide and 196 yards long. The crushed stone is to be 9 inches thick. How many cubic yards of stone will they need? Round to the nearest tenth when necessary.
A. 343 yd3 B. 4116 yd3 C. 12,348 yd3 D. 1029 yd3
Solve the system of linear equations. If the system has infinitely many solutions, describe the solution with an ordered triple in terms of variable z.4x - y + 3z=12x + 4y + 6z=-325x + 3y + 9z=20
A. (8, -7, -2) B. (-8, -7, 9) C. (2, -7, -1) D. no solution
Find the equation of the hyperbola satisfying the given conditions.Vertices: (±4, 0); foci: (±7, 0)
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1