Solve.The speed of a stream is 6 mph. If a boat travels 86 miles downstream in the same time that it takes to travel 43 miles upstream, what is the speed of the boat in still water?
A. 18 mph
B. 20 mph
C. 12 mph
D. 21 mph
Answer: A
Mathematics
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Perform the indicated operation. Express your answer in simplest form.
+ 
A. 
B. 
C. 
D. 
Mathematics
Find a general term an for the geometric sequence.a1 = 
, r = 8
A. an = 
? 8n-1
B. an = 
n - 1 + 
C. an = 
+ 
(n - 1)
D. an = 
+ 8(n - 1)
Mathematics
Solve the quadratic equation by any method.x2 + x + 5 = 0
A. 
B. -1, 0
C. 1, 0
D. No real solutions
Mathematics
Write a linear factorization of the function.f
= x4 + 16x3 + 65x2 + 16x + 64
A. f
= 
2
B. f
= 
C. f
= 
D. f
= 
Mathematics