Answer:
Equation: 
Step-by-step explanation:
By definition, the perimeter of a figure can be calculated by adding the lenghts of its sides.
Knowing this, you can write the following equation:
<em> [Equation 1]</em>
According to the data given in the exercise, the perimeter in feet of the fighter is:

Therefore, you can substitute this values into<em> [Equation 1]:</em>

Finally, you must solve for "x" in order to find its value. This is:

Answer:
See Explanation
Step-by-step explanation:
<u>Define the variables</u>
Let the entry fee be c and the hourly rate be m
Let the number of hours be x and the total amount be y
<u>Work to solve</u>
For Sami's skate
and 
For Brad's skate
and 
<u>The equations</u>
The equation is derived using: 
For Sami's skate

For Brad's skate

<u>When the cost are the same</u>
To do this, we equate both expressions
i.e.




i.e. the cost are the same at the 4th hour
<u>What is the cost</u>
Substitute 4 for x in any of the equations



<em>The cost is $14.00</em>
The intercept is

.
This is the y-intercept. To find the x-intercept,

.
(1.365, 0)
Answer:
16500
Step-by-step explanation:
If it leaks 75 mL a minute you multiply that by the 220. Then you get 16,500