Answer:
t=-6
Step-by-step explanation:
Answer:
s=21
Step-by-step explanation:
given ,
area=441cm^2
length (l)=s
we know,
or,l^2=441cm^2
or,l=√441cm^2
or,l=21cm
Answer:
Inverse function: 
Step-by-step explanation:
The inverse of a functon
is the function
such that
.
In this problem, the function that we have to reverse is

In order to reverse the function, we do it in this way:
1) First, we isolate x and we write it as a function of y. Therefore:

2) Then, we exchange the names of the variables, so:

Therefore, the inverse function is
