Mark opened a savings account at his bank with a guaranteed annual interest rate of 5.0% for 5 years. If he deposits $10,000.00
2 answers:
<h2>Answer:</h2>
The domain of this function in this context is:
0 ≤t ≤5 i.e. [0,5]
<h2>Step-by-step explanation:</h2>We are given a function A(t) such that it models the interest on the account which is compounded annually.
The function is given as follows:
We are asked to find the domain of this function.
Domain of a function--
It is the set of all the x-values i.e. the value of the independent variables for which the function is defined.
Here the independent variable is t.
Now, here the interest is to be calculated for 5 years.
This means that the value of t is: 0 ≤t ≤5.
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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