Answer:
the answer is 2.1
Step-by-step explanation:
using a calculator:
1. type in 4.2
2. multiply 4.2 by 1/2
3. the answer will then be shown as 2.1
The formula of the future value of annuity ordinary
Fv=pmt [(1+r)^(n)-1)÷r]
Fv future value
Pmt payment per year 4000
R interest rate 0.0215
N time 5 years
Fv=4,000×(((1+0.0215)^(5)−1)÷(0.0215))
fv=20,878.69
Answer:






Where h,k represent the vertex and we got:

(5,6)
Step-by-step explanation:
We have this original function given :

And we want to find the vertex for this new function
and we have:

And solving the square we got:

And adding similar terms we got:

Now we can complete the square like this:


The general equation is given by:

Where h,k represent the vertex and we got:

(5,6)