State whether the function is a polynomial function or not. If it is, give its degree. If it is not, tell why not.f(x) = 
A. Yes; degree 5
B. No; it is a ratio of polynomials
C. Yes; degree -3
D. Yes; degree 3
Answer: B
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Find an equation of variation in which the following are true.x varies inversely as the square of y, and x = 20 when y = 12.
A. x = 2880y2
B. x = 
C. x = 
D. x = 
Divide and then interpret the remainder.How many dozen eggs is 163 eggs?
A. 14 dozen with 7 eggs left over B. 13 dozen with 7 eggs left over C. 13 dozen with 5 eggs left over D. 14 dozen with 5 eggs left over
Solve the problem.Martha can rake the leaves in her yard in 8 hours. Her brother can do the job in 2 hours. How long will it take them to do the job working together?
A. 
hr
B. 
hr
C. 
hr
D. 
hr
Solve the problem.Paul has grades of 63 and 81 on his first two tests. What must he score on his third test in order to have an average of at least 70?
A. at most 70 B. at most 71 C. at least 72 D. at least 66