Answer:

Step-by-step explanation:
The depth function is:

After 3 minutes, a submarine had descended to −320 feet.
This means that
. So


After 8 minutes, the submarine had descended to −420 feet.
This means that
. So


From the first equation:

So





And

So

p.s. Excuse the scribble.
Step-by-step explanation:
This is a piece-wise function. The three intervals we need to worry about are [0, 1), [1,2], and [2,4].
Separate the functions into their pieces and draw out the individual graphs. Place them together onto the graph within their respective intervals.
Answer:
Your answer is $24
Step-by-step explanation:
5*4 is 20, so all that you have to do it 6*4
Answer:
The value of x is 40.
Step-by-step explanation:
The measures of the angles in a quadrilateral are represented by x, 2x, 3x, and 3x.
According to the angle sum property of quadrilateral, the sum of interior angles of a quadrilateral is always 360 degree.
Since the measures of the angles in a quadrilateral are represented by x, 2x, 3x, and 3x, therefore

This is the equation which is used to solve for the value of x.



Therefore the value of x is 40.
Answer:
9
Step-by-step explanation:
Highest number is 19 lowest is 10. 19-10 is 9.