X miles per hour - <span> speed of the boat in still water
(x - 2) - speed up the river
(x + 2) - speed down the river
</span>

=

30 * (x + 2) = 38 * (x - 2)
30x + 60 = 38x - 76
- 8x = - 136
x =
17 miles per hour - <span>
the speed of the boat in still water.</span>
D and E are the ones that aren’t functions because they use the x-values more then once
360 - 47 = 313
The answer is A
Answer:
BF
BA
AG
Step-by-step explanation: