Solve the problem.A surveyor is measuring the distance across a small lake. He has set up his transit on one side of the lake 80 feet from a piling that is directly across from a pier on the other side of the lake. From his transit, the angle between the piling and the pier is 70°. What is the distance between the piling and the pier to the nearest foot?
A. 29 ft
B. 75 ft
C. 27 ft
D. 220 ft
Answer: D
Mathematics
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Simplify.(-i)34
A. 1 B. -i C. i D. -1
Mathematics
Write as the sum and/or difference of logarithms. Express powers as factors.ln 
5/3, x > 2
A. 
ln (x2 + 11x - 18) - 
ln (x - 7)
B. 
ln (x + 9) + 
ln (x - 2) - 
ln (x - 7)
C. ln (x + 9) + ln (x - 2) + ln 5 - 10ln (x - 7) - ln 3
D. 5ln (x + 9) - 3ln (x - 2) - 
ln (x - 7)
Mathematics
Solve the problem.A projectile is thrown upward so that its distance above the ground after t seconds is 
What is its maximum height?
A. 81,750 ft B. 2250 ft C. 7875 ft D. 2900 ft
Mathematics
Find the domain of the rational function.h(x) = 
A. {x|x ? 0} B. all real numbers C. {x|x ? 7} D. {x|x ? -7}
Mathematics