5. what is the center and radius of
(x + 4)2 + ( + 6)2 = 64

equation of circle is -

(x-h) ^2 + (y-k) ^2 = r^2

h, k is center point and r is radius

compare circle equation -

h= - 4 , k= - 6

center point (-4, -6)

radius = 8

true? is that what you're asking or do you mean something else?

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.