The ratio of working-age population to the elderly in the United States (including projections after 2000) is given by
?
?
with t = 0 corresponding to the beginning of 1995.
?
Round the answers to two decimal places, if necessary.
?
What will be the ratio at the beginning of 2005?
?
__________
?
At the beginning of 2020?
?
__________
What will be an ideal response?
4; 3.05
Mathematics
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A. 3 B. -1 C. 1 D. -3
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Simplify the exponential expression.(5x-6y3z-2)-3
A. 
B. 
C. 
D. 
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Solve the equation. Use the change of base formula to approximate an exact answer to the nearest hundredth when appropriate.10x = 543
A. x = log -543
B. x = log 
C. x = log 543
D. x = log - 
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