Answer:

Step-by-step explanation:
Use the exponential growth formula

Where A is the final amount in the account, P is the initial amount, r is the growth rate and t is the time in years
In this problem
We know that

So

Finally after 5 years the balance of the account is:

The formula for continuously compounded interest is:



The answer is $8478.98
(B.) I think I don’t know
We can follow the following steps to make an equation and solve it.
Step 1:
five less than 13 means we have to subtract 5 from 13
so it becomes 13-5
Step 2:
A number y is five less than thirteen.
Now in algebraic expressions, "is" stands for "="
So we have:

Step 3:
Solving the equation to find y.

Subtracting 5 from 13, we get :
y=8
Answer:
For the given equation the solution is y=8.