Emma has been keeping an eye on an emerald ring she likes. Its original price was $3,000. After being marked down for a clearance sale, it is now $2,220. By what percent has the price of the ring gone down?

26%

Step-by-step explanation:

Original price of the emerald ring

= $3000

Price after the sale

= $2220

Decrease in amount

= $(3000 - 2220)

= $780

Percentage decrease

Hence, by 26% has the price of the ring gone down.

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.

b

step-by-step explanation: