Determine whether the given function is one-to-one. If it is one-to-one, find its inverse.f(x) = 
- 7
A. f-1(x) = 
+ 7
B. f-1(x) = (x + 7)3
C. f-1(x) = x3 + 7
D. f-1(x) = (x - 7)3
Answer: B
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Answer the question.For which of the following functions do both fx and fy exist?
A. II. and IV. B. II., III., and IV. C. IV. only D. I. and II.
Find the indicated probability.The following contingency table provides a joint frequency distribution for the popular votes cast in the 1984 presidential election by region and political party. Data are in thousands, rounded to the nearest thousand. Political Party
A person who voted in the 1984 presidential election is selected at random. Compute the probability that the person selected voted Democrat given that they are from the Midwest.
A. 0.413 B. 0.567 C. 0.280 D. 0.113
Multiply.8(x + 7)
A. 56x B. 8x + 8 C. 8x + 7 D. 8x + 56
Solve the system of linear equations.
A. ?
B. ?
C. ?
D. ?
E. ?