Steel has been playing a decreasing role in the manufacture of beverage cans in the United States. The use of bimetallic cans has been dwindling, whereas the use of all-aluminum cans has been growing steadily. The accompanying table gives the production (in billions) of all-aluminum cans over the period from 1975 through 1989:
Year19751977197919811983198519871989Cans, y16.72633.348.35765.874.283.3?
Find an equation of the least-squares line for these data. (Let 
represent the year 1975.) Please round the coefficients in your equation to three decimal places. Use the result to estimate the number of cans produced in 1996, assuming the trend continued. Round the answer to three decimal places.
?
A. 
billion cans
B. 
billion cans
C. 
billion cans
D. 
billion cans
Answer: A
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and g(x) = tan-1 
. Explain why the graph looks like it does.
What will be an ideal response?
Multiply.(1)(-5)(-7)(-3)(3)
A. 105 B. -105 C. 315 D. -315
Estimate the answer by rounding as indicated.Estimate the product by rounding each factor to the nearest hundred.106 × 599
A. 600,000 B. 50,000 C. 500,000 D. 60,000
For Figure 1, describe a relationship between ?BEC and two arcs on Circle O.
