Solve the problem.Assume that from 1930 to 1980, the number of deaths from lead poisoning (per 100,000 people) decreased dramatically and could be modeled by 
where x is the year. Determine when, to the nearest year, this death rate was 75 or less by graphing y = f(x) and 
in 
by [0, 200, 25].
A. 1964 or after
B. 1960 or after
C. 1973 or after
D. 1967 or after
Answer: D
Mathematics
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Answer the question.Find a rational number between 
and 
.
A. 0.565656...
B. 0.554554554...
C. 0.
D. 0.50
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Express the product as a sum containing only sines or cosines.-2 sin(5?) sin ?
A. cos(6?) + cos(4?) B. cos(7?) - cos(3?) C. cos(6?) - cos(4?) D. cos(7?) + cos(3?)
Mathematics
Solve the equation.-25 = 24 + f
A. -1 B. -49 C. 1 D. 49
Mathematics
Evaluate the expression without a calculator.log88
A. 8 B. 10 C. 1 D. 0
Mathematics