Answer:
84
Step-by-step explanation:
(7² - 5) × 2
(49 - 5) × 2
(42) × 2
84
F(x) - g(x) = 3x + 2 - (6x-7) = 3x + 2 - 6x + 7 = -3x + 9;
There is no answer correct!
<h3>Approximately 5 kilometers, below the sea's surface is the vent</h3>
<em><u>Solution:</u></em>
Given that,
The vent is 3.1 miles below the sea's surface
To find: kilometers below the sea's surface is the vent
From given,
1 kilometer = 0.6214 miles
Use the above conversion factor and convert 3.1 miles to kilometers
From above,

Therefore,

Thus, approximately 5 kilometers, below the sea's surface is the vent
To do this, lets identify the slope and the y-intercept.
y = mx + b
y = -1/2x - 2
The slope is -1/2 and -2 is the intercept.
So, it is the 3rd one.
Hope this helps!