In a certain city there is a river running through the middle of the city. There are four islands and eleven bridges as shown in the figure below.
It is possible to take a walk through this town, starting on the South Bank, crossing each bridge one (and only once) and ending
A. on island B.
B. back on the South Bank.
C. on the North Bank.
D. on island C.
E. none of these
Answer: C
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Find all the roots of the complex number. Put answers in standard form.Cube roots of 8j
A. -2j, - 
- j, 
- j
B. -2j, 
+ j, - 
+ j
C. 2j, 
- j, - 
- j
D. 2j, 
+ j, - 
+ j
Solve the problem.The population P of elephants in a wild animal preserve changes with time (in years) according to the equation dP - 0.0004P(190 - P)dt = 0. Find P as a function of t if there are 36 elephants initially.
A. P = 
B. P = 
C. P = 
D. P = 
Convert the given number to standard notation.7.887 × 10-5
A. 0.0007887 B. 0.000007887 C. -788,700 D. 0.00007887
Simplify the following expressions. Simplified expressions must be in lowest terms, and exponents must be positive numbers.
A. 
B. 
C. 
D. none of these