Answer:
22-5f
Step-by-step explanation:
22 less then 5 would be 22-5 and then you have 5 times a number f so that would make it 5f so you would just attach the f to the 5. I hope this is helpful and is what you are looking for.
Answer:
A and F
Step-by-step explanation:
You plug in each one and see which ever one gets 20.
Is your test online or on paper? how would you show work. i’ll comment the answer on this

We need to get the equation in square form
We apply completing the square method

Divide all the terms by 5

Group x terms and y terms separately

By completing the square method, we take half of coefficient of x and square it

square it 
Add 1 on both sides


square it 
Add 4 on both sides

Add 6 on both sides

Now factor both parenthesis

The equation of the circle is 