The formula to find the circumference of a circle is C = 2nr. Use 3. 14 for it. 4 in. What is the approximate circumference of the circle? O A. 6.3 in. B. 9.1 in. Oc. C. 12.6 in. OD. 25 in. E. 50.2 in.​

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

Melanie is buying a bathing suit that costs 39.99. she is given a discount at the cash register of $6.00 when she scratched 15% off on a game piece for a store promotion. what will the sale price of melanie’s bathing suit be?