X is the shorter base.
Y is 4 less than 3 times x.
This means that if x were to be multiplied by 3, y would be short by 4. If put into an equation it would look like this.
Y = 3x -4
The boat is 428.9 feet from the lighthouse.
To solve this, draw a right triangle. You will see that you have an angle of 25 degrees with an opposite side of 200 and the adjacent side is x.
We can write and solve the following tangent equation:
tan(25) = 200 / x
x = 200 / tan(25)
x 428.9
Y = -1/3x + b
then plug it in
-4 = (-1/3 x 6) + b. (6 times -1 divided by 3)
-4 = -2 + b. (move -2 to other side)
b = -2. (now put em all together)
y = -1/3x -2
The correct answer is 554 minutes