If you multiply 272 by 2 u’ll get 544 Nd if u multiply 544 by 2 u’ll get 1,088 that’s after a year
If you're solving for d your answer is d = -t,rt
If you're evaluating the problem your answer is t = d/r
If you're solving in terms of arbitrary letter d your answer is r=d/t
I hope this helps!

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 
Angle O is correspondent with the position of angle D.