Answer:
25% is called a quarter of 900
Step-by-step explanation:

Answer:
43.68
Step-by-step explanation:
For this case we have the following function:

We change the variables:

From here, we clear the value of y.

Then, we make the following change:

Finally, the inverse function is:

Answer:
The inverse of the given relation is:

Answer:
B
Step-by-step explanation:
add all of last year's and then divide by 3 witch is 3.1
add all of this year's and then divide by 3 witch is 4.1
now subtract witch will give you 1.0