Use similar triangles to solve the application.A surveyor needs to determine the length L of a river, but he does not want to get wet. He lays out the similar triangles in the diagram. What is the length of the river?
A. 225 m
B. 25 m
C. 375 m
D. 5625 m
Answer: A
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Express the integrand as a sum of partial fractions and evaluate the integral.
dx
A. 3 ln 
+ 
+ C
B. 3 ln 
- 
+ C
C. 3 ln 
+ 
+ C
D. 2 ln 
- 
+ C
Determine whether it is true or false that the given number is a solution of the equation.27; 7(y - 12) = 105
A. True B. False
Use the formula for 
to solve.A church has 10 bells in its bell tower. Before each church service 4 bells are rung in sequence. No bell is rung more than once. How many sequences are there?
A. 151,200 B. 302,400 C. 210 D. 5040
Form a polynomial f(x) with real coefficients having the given degree and zeros.Degree 3: zeros: 1 + i and -7
A. f(x) = x3 -7x2 - 12x - 12 B. f(x) = x3 + x2 - 12x + 14 C. f(x) = x3 + 5x2 - 12x + 14 D. f(x) = x3 + 5x2 + 14x - 12