Evaluate the expression.
A. 
B. 16
C. 4
D. 
Answer: D
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Evaluate the integral.
A. 60
B. 45
C. 
D. 30
Write the subtraction as an addition.(-1) - 46
A. (-1) - (-46) B. (-1) + (-46) C. (-1) + 46 D. None of these
Identify the domain and range of the relation.Ranking of finalists in ice-skating competition: 
A. Domain: {1, 2, 3, 4}; Range: {Alice, Toni, Marcie, Celia} B. Domain: {Alice, Toni, Marcie, Celia} ; Range: {1, 2, 3, 4} C. Domain: {1, Alice}; Range: {2, Toni} D. Domain: {1, 2, 3, 4, 5......}; Range: {Alice, Toni, Marcie, Celia}
Solve the problem.An approximation of the amount in billions of dollars that Americans have spent on their pets from 1998 to 2006 can be obtained by substituting a given year for x in the expression 1.712x - 3402. How has the amount Americans have spent on their pets changed from 1998 to 2006?
A. It has largely increased. B. It has increased a little. C. It does not really change. D. It has decreased.