Answer:
x- axis, I'm pretty sure
Step-by-step explanation:
I need more information to solve this question, comment below
Answer:
a. 3x^2 = 81
x^2 = 27

Step-by-step explanation:
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>
There shouldn't be a negative in front of one of the equations.