The temperature fell by 18 degrees Fahrenheit today. Write a signed number to represent this temperature change.
___
Ali received 5 dollars.
Write a signed number to represent this change.

The temperature fell by 18 degrees Fahrenheit today.

Write a signed number to represent this

temperature change:

-18

Ali received 5 dollars.

Write a signed number to represent this change:

5

The circle equation is in the format (x – h)2 + (y – k)2= r2, with the center being at the point (h, k) and the radius being "r".

x²+y²-8x-6y+2 =0 (a)
(x-4)² = x² - 8x + 16
(y-3)² = y² - 6y + 9

Equation (a) can be rewritten as:
(x-4)² + (y-3)² + 2 - 16 - 9 = 0
(x-4)² + (y-3)² = 23

The coordinates for the center of the circle is: ( 4,3)
The radius is √23=4.8