9)
We are given:
The largest rectangle has 3 rectangles:
Rectangle 1 has a length of x & a width of 5
Rectangle 2 has a length of 2y & a width of 5
Rectangle 3 has a length of 3 & a width of 5
The area is given by:

OR
Answer:
the first one not the second one
Step-by-step explanation:
Answer:
X= -1/3 or 4
Step-by-step explanation:
Answer: 
Step-by-step explanation:
The equation for inverse variation is:

Where "k" is the constant of variation.
If you solve for for the constant "k", you get the form:

So, if
then 
Knowing the value of "k", you can find the value of "x" when
, by substituting these values into the equation
.
Therefore, you get that the value of "x" when
is:

Answer:
at ten minutes it will be at 60.7 and at 12 minutes itll be at 57.7