B is the answer you are looking for.
Answer: 
Step-by-step explanation:
The rate of change is a measure in which one variable is modified in relation to another. In this case we have the variables:
Temperature in 
Time in 
Now, to calculate the rate of change, we have to divide one variable by the other. In this case the change in temperature
divided by the time variation
.
Hence, assuming the ambient temperature of the glass is
and the elapsed time
we have:

Answer:
small 30 cups medium 40 cups large 30 cups
Step-by-step explanation:
i converted everything to liters then times that by ten for each of them 10 smalls gets you 5liters
10 mediums get you 10 liters 10 larges get you 15 liters
Answer:

Step-by-step explanation:
We have been given two functions as
and
. We are asked to show that both functions are inverse of each other algebraically and graphically.
Let us find inverse function of
as:

Interchange x and y values:

Using log property
, we will get:



Using log definition; If
, then
, we will get:


Therefore, we can see that function
is inverse of function
.
We can see that both functions are symmetric about line
, therefore, both functions are inverse of each other.
From the graph, identify the x=-2 point on x axis,
(is it 2 units to left of origin.)
now, imagine a vertical line through it.
This vertical line intersects the given line at which point?
The y co-ordinate of this point is your answer.
From the given graph,
the vertical line intersects at (-2,3)
so y= 3 it is :)