Answer:
first and last one
Step-by-step explanation:
first one would be 12 and last one is 10
The answer would be A. -16
X =15
Then plug 15 for each x value
Answer:
The water is 208.22ft from the tug boat
Step-by-step explanation:
The governing equation is 
y is the height above the ocean
x is the distance from the tugboat
if y= 6ft, the equation will now become

we can arrange this properly to form a quadratic equation by grouping like terms.

solving quadratically we have two values of x as 208.22ft and 0.873 ft.
We can take a more realistic value as a solution to our problems:
208.22ft
Answer:
the equation of this line is Y=1x - 5