Solve the problem.From the edge of a 1000-foot cliff, the angles of depression to two cars in the valley below are 21° and 28°. How far apart are the cars? Round your answers to the nearest 0.1 ft.
A. 724.5 ft
B. 724.4 ft
C. 714.4 ft
D. 713.4 ft
Answer: B
Mathematics
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Assume that the expressions given are denominators of fractions. Find the least common denominator. 7a + 21, a2 + 3a
A. 7a(a + 3) B. 7a2 + 3 C. 7a + 3 D. 7a2 + 21
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Graph the function.f(x) = log1/3(x + 2)
A. 
B. 
C. 
D. 
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Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = - 
x2 + 9x - 8
A. Increasing on 
; decreasing on 
B. Increasing on 
; decreasing on 
C. Increasing on 
; decreasing on 
D. Increasing on 
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Mathematics