Given the interval (a, b) on the x-axis with the point x0 inside, find the greatest value for ? > 0 such that for all x, 0 < 
< ? ? a < x < b. a = -8, b = 2, x0 = -1
A. 1
B. 3
C. 7
D. 4
Answer: B
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Solve the problem.Tim and Judy mix two kinds of feed for pedigreed dogs. They wish to make 31 pounds of feed worth $0.30 per pound by mixing one kind worth $0.22 per pound with another worth $0.39 per pound. How many pounds of the cheaper kind should they use in the mix? Round to the nearest whole pound if necessary.
A. 15 pounds B. 16 pounds C. 20 pounds D. 18 pounds
Provide an appropriate response.Suppose there are 4 trains connecting town X to town Y and 6 roads connecting town Y to town Z. In how many ways can a person travel from X to Z via Y?
A. 24 B. 36 C. 10 D. 12 E. 16
Write this word statement as an equation. Use x as the variable, and find all solutions from the set 
The product of a number and 7 is 21.
A. 7x = 21; 7 B. No Solution C. 21x = 7; 3 D. 7x = 21; 3
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) = x(x - 9)
A. Yes; degree 2 B. Yes; degree 0 C. Yes; degree 1 D. No; it is a product