The rate of change of the population of a city is proportional to the population ?P at any time (in years). In 2000, the population was 200,000, and the constant of proportionality was 0.015. Estimate the population of the city in the year 2020.
?
A. ?260,972 people
B. ?268,972 people
C. 263,972 people
D. ?266,972 people
E. 269,972 people
Answer: E
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Solve the problem.Trina and Monica use a metal alloy that is 18% copper to make jewelry. How many ounces of a 13% alloy must be mixed with a 25% alloy to form 120 ounces of the desired alloy?
A. 72 oz B. 50 oz C. 55 oz D. 70 oz
Use the graph to determine the function's domain and range.
A. domain: [4, ?) range: [-5, ?) B. domain: (-?, ?) range: [-5, ?) C. domain: (-?, 4) or (4, ?) range: (-?, -5) or (-5, ?) D. domain: (-?, ?) range: (-?, ?)
Solve the problem.If n(A) = 41, n(B) = 43, and n(A ? B) = 77, find n(A ? B).
A. 84 B. 14 C. 70 D. 7
Solve. Write the answer in simplest form.Jeffrey has two packages. One weighs 3
ounces, and the other weighs 
ounces. What is the total weight of the two packages?
A. 2
ounces
B. 1
ounces
C. 4
ounces
D. 4
ounces