Decide if the system of equations in two variables is linear or nonlinear.
A. Nonlinear
B. Linear
Answer: B
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Solve.The number of books in a small library increases according to the function 
where t is measured in years. How many books will the library have after 10 year(s)?
A. 6962 B. 9174 C. 3984 D. 9034
Solve the problem.The accompanying figure shows the graph of y = -x2 shifted to a new position. Write the equation for the new graph.
A. y = -x2 + 2 B. y = -x2 - 2 C. y = -(x + 2)2 D. y = -(x - 2)2
Find the domain of the logarithmic function. Write your answer in interval notation.f(x) = log3(x + 9)2
A. (-9, ?) B. (-?, -9) ? (-9, ?) C. (9, ?) D. (-?, 0) ? (0, ?)
Solve.An earthquake was recorded with an intensity which was 
times more powerful than a reference level earthquake, or 
What is the magnitude of this earthquake on the Richter scale (rounded to the nearest tenth)? The magnitude of an earthquake of intensity I is defined as 
, where Io is a minimum level for comparison.
A. 3.9 B. 4.9 C. 0.5 D. 11.3