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 13th
C. July 14th
D. July 12th
Answer: D
Mathematics
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Find the missing number, if possible. There may be more than one number that works, so find as many as possible. If no number works, write "No number possible."10 ? 
+ 2 = 102
A. -10, 10 B. -94, 94 C. 90 D. 10
Mathematics
Find the product.
A. 
B. 
C. 
D. 
E. 
Mathematics
Use the product rule to simplify the expression. Write the result using exponents.(-9)7(-9)3
A. -910 B. 8121 C. 8110 D. (-9)10
Mathematics
Solve the problem.The time it takes to complete a certain job varies inversely as the number of people working on that job. If it takes 20 hours for 9 carpenters to frame a house, then how long will it take 30 carpenters to do the same job?
A. 6.0 hr B. 30 hr C. 40 hr D. 13.5 hr
Mathematics