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 150 or less by graphing y = f(x) and 
in [1930, 1980, 10] 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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Determine whether the equation defines y as a function of x.y = 
A. Yes B. No
Mathematics
Solve the equation.-7z = 56
A. -8 B. 8 C. 63 D. -63
Mathematics
Provide an appropriate response.The amount a bank charges if someone writes you a check, but does not have the necessary money in the bank to cover it, is termed a(n):
A. ATM charge B. NSF charge C. statement charge D. returned check fee
Mathematics
Write the expression using exponents.4 ? 4 ? 4 ? 4 ? 4 ? 4
A. 45 B. 24 C. 46 D. 64
Mathematics