X = 3y - 4
x + y = 16
3y - 4 + y = 16
4y = 20
y = 5
x = 3(5) - 4
x = 11
$122.4384 is the answer...it is found by multiplying .04% to 127.54 and then subtracting that answer from the original ammount
F(X) means plug in te number within the parenthesis for the given function. It's simply an equation expressed through different notation. In this case it asks you to plug in two, so you do:
-3(2)+4 = f(2)
That means that f(2)=-2.
Multiply every coordinate by the scale factor 3
(-1,2,0) ----> (-3,6,0) is the answer
Ok so....since the submarine is already 450 feet below sea level and its descending 300 feet descending means going down so what you do is add 450 plus 300 and get your answer which is 750! It's new position is 750 feet:) HOPED THIS HELPED HAVE A BLESSED DAY!!