Solve the problem.The graph below shows the number of tuberculosis deaths in the United States from 1989 to 1998.
Estimate the average rate of change in tuberculosis deaths from 1991 to 1997.
A. About -90 deaths per year
B. About -60 deaths per year
C. About -460 deaths per year
D. About -1 deaths per year
Answer: A
Mathematics
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Perform the following calculations.(-5)(-21) + (-4)(-17)
A. -173 B. -39 C. 173 D. -47
Mathematics
Find the book value after the given number of years, using the straight-line method. Round your answer to the nearest dollar.Find the book value at the end of 4 years.Cost:$39,000Estimated life:9 yearsEstimated scrap value:$5,100
A. $21,667 B. $31,467 C. $15,067 D. $23,933
Mathematics
Perform the indicated operation and write the answer in lowest terms.
+ 
- 
A. 
B. 
C. 
D. 
Mathematics
Graph the equation by plotting points.4x2 + 4y = 16
A. 
B. 
C. 
D. 
Mathematics