<h2>(-∞,∞) </h2>
Step-by-step explanation:
PART A:
given 

This is true for all values of x.
So,x∈
-∞,+∞
PART B:
When
,left hand side=
right hand side=
so,left hand side =right hand side
When
,left hand side=
right hand side=
so,left hand side =right hand side
When
,left hand side=
right hand side=
so,left hand side =right hand side
Y = -1/2x + 11/2
slope and point slope formula are used
Using implicit differentiation, it is found that y is changing at a rate of 10 units per second.
---------------------
The equation is:

Applying implicit differentiation in function of t, we have that:

- x-values changing at a rate of 2 units per second means that

- Point Q(1,4) means that
.
We want to find
, thus:


y is changing at a rate of 10 units per second.
A similar problem is given at brainly.com/question/9543179
Stop and save because you save your money and get more apples
I'm not sure what the question is but to get the mean you add up all the numbers and divide them by the amount of numbers there are.