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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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 
; decreasing on 
Mathematics
Use the power rules for exponents to simplify the expression. Write the answer in exponential form.(-4a3)2
A. (-4)6a3 B. -8a3 C. (-4)2a6 D. (-4)6a6
Mathematics
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
Mathematics
Graph the function.f(x) = log1/3(x + 2)
A. 
B. 
C. 
D. 
Mathematics