Answer:
The value of the 50th percentile is 33.2 hours.
Step-by-step explanation:
The median corresponds to the 50th percentile, then the value of the 50th percentile is 33.2 hours.
Answer: See the graph attached.
Step-by-step explanation:
The standard form of a quadratic function is:

Where (h,k) is the vertex of the parabola.
If
is negative, then the parabola opens down.
Then, for the function:

You can identify:

Then the vertex of the parabola is at (2,4)
Note that
, therefore the parabola opens down.
Find the intersection with the x-axis. Substitute
and solve for x:

Knowing that the vertex is at (2,4), the parabola opens down and it intersects the x-axis at x=0 and x=4, you can graph the function, as you observe in the figure attached.
Answer:
a) 5.9
b) 4.2
Step-by-step explanation:
Plot the data points on the number line (see attached).
<u>Part (a)</u>

<u>Part (b)</u>

Answer: Multiply from left to right.
(-3/4)(-4/7)(-2/3)
3/7(-2/3)
-2/7
Step-by-step explanation:
Answer:
COP: 2X
Step-by-step explanation:
K= Y/X
K= 4/2
K= 8/4
K= 12/6
K=16/8