Divide, when possible.231 ÷ 7
A. 36
B. 31
C. 33
D. 35
Answer: C
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In a certain city there is a river running through the middle of the city. There are three islands and nine bridges as shown in the figure below.
Suppose there is a crossing charge of $1.00 every time one crosses a bridge. A tourist wants to start on the South Bank, stroll across each of the bridges at least once, and return to her hotel on the South Bank at the end of the trip. What is the cheapest possible cost of such a trip?
A. Such a trip is impossible. B. $18 C. $9 D. $10 E. none of these
Verify the identity.sin x(sin x + sin 5x) = cos 2x (cos 2x - cos 4x)
What will be an ideal response?
Find the lengths of the major and minor axes for the ellipse.  figure 1.png)
What will be an ideal response?
Solve the problem.Since life expectancy has increased in the last century, the number of Alzheimer's patients has increased dramatically. The number of patients in the United States reached 4 million in 2000. Using data collected since 2000, it has been found that the data can be modeled by the exponential function 
where x is the years since 2000. Estimate the Alzheimer's patients in 2025. Round to the nearest tenth.
A. 7.8 million B. 3.9 million C. 8.0 million D. 4.8 million