What is the domain of the function shown in the mapping
2 answers:
Answer:
Option A is correct
Step-by-step explanation:
Domain is the set of all input values ( i,e x-values) where function is defined.
In the given figure:
Input values are:
From top to bottom:
-3, 2, -5, 1, 6
Now, sort them to get:
-5, -3, 1, 2, 6
by definition of domain:
Therefore, the domain of the function is:
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Let numbers of books be 'b' and numbers of CDs be 'c'
We can set up two equations:
Equation [1] ⇒
Equation [2] ⇒
We are solving for the number of books and the number of CDs bought
When we have two equations in terms of two different variables;
and 
, that we need to solve, then this becomes a simultaneous equation problem.
First, rearrange Equation [1] to make either or the subject:
Then we substitute into Equation [2]
Now we know the value of which is , substitute this value into we have 
Answer:
Numbers of books = 13
Numbers of CDs = 7
We can set up two equations:
Equation [1] ⇒
Equation [2] ⇒
We are solving for the number of books and the number of CDs bought
When we have two equations in terms of two different variables;
First, rearrange Equation [1] to make either
Then we substitute
Now we know the value of
Answer:
Numbers of books = 13
Numbers of CDs = 7
So you have to put 25 inside the blank box.
look at the attached picture
Hope it will help you
Good luck on your assignment
