Solve the problem.The speed of a stream is 5 mph. If a boat travels 
downstream in the same time that it takes to travel 
upstream, what is the speed of the boat in still water?
A. 15 mph
B. 18 mph
C. 17 mph
D. 10 mph
Answer: A
Mathematics
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Write the binomial expansion of the expression.(5x - 1)4
A. (25x2 - 5x + 1)4 B. 625x4 - 500x3 + 150x2 - 20x + 1 C. -625x4 + 500 x3 + 150x2 + 20x + 1 D. 625x3 - 500x2 + 150x - 20
Mathematics
Match the equation with the correct graph.y + 4 = 
(x + 1)
A. 
B. 
C. 
D. 
Mathematics
Find the focus and the directrix of the parabola.x = 2y2 + 8y + 5
A. 
; x = - 
B. 
; x = - 
C. (-1, -3); x = -5
D. (-5, -3); x = -7
Mathematics
Decide whether or not the set of ordered pairs defines a function.{(-3, 5), (-2, -9), (3, -8), (3, 6)}
A. No B. Yes
Mathematics