Answer:
2x+5
Step-by-step explanation:
X represents the number in "2 times a number." You could insert any number into x.
Answer:
<em>The speed of a boat in still water is 6 miles per hour. </em>
Step-by-step explanation:
t =
(upstream)
t =
(downstream)
=
40 ( s - 2 ) = 20 ( s + 2 )
40s - 80 = 20s + 40
20s = 120
s = 6 mi / h
<em>The speed of a boat in still water is 6 miles per hour.</em>
Answer:
1/2
Step-by-step explanation:
(x) = 95x + 25 is correct, since the $25 cost is fixed, but the $95 cost increases as x increases.