For On call = 10/3.5 = $2.85 for per hour
For talk time 1.25/1/2= $2.5 for per hour
Their error is that they divided 12 by 30, instead of 30 by 12 in order to get the price per pair
the correct unit price is $2.50 per pair
2.5 * 12 = 30
Answer:
20 x 1 / 18= 1.11
Step-by-step explanation:
Answer:
The graph of the inverse function is the same that the graph of the original function
Step-by-step explanation:
step 1
Find the equation of the function in the graph
Let
f(x) ---> the function in the graph
we know that
Is a linear function
take the points (0,6) and (6,0)
<em>Find the slope of the linear function</em>

<em>Find the the equation of the linear function in slope intercept form</em>

we have

---> the y-intercept is given
substitute

step 2
Find the inverse of the function f(x)
Let
y=f(x)

<em>Exchange the variables (x for y and y for x)</em>

Isolate the variable y

Let



In this problem the graph of the inverse function is the same that the graph of the original function
We first need to find the radius of the circle, so we need to do 8π/π which gives us a diameter of 8 cm, halving this gives us a radius of 4 cm.
The area of this circle will be:
A = πr^2
A = 4^2
A = 16π cm^2
Now to find the volume we simply multiply the area by the height:
16π × 7 = 112π cm^3 which is our final answer.