Now karen must decide which color of sprinkles to use: pink sprinkles a 2-lb bag costs $6.40. blue sprinkles a 4-oz bag costs $1.00 green sprinkles a 1-lb, 8-oz bag costs $4.20. based on the unit price, which color of sprinkles should karen buy? show your work and justify your response.

Pink: 2lbs = $6.40
Blue: 4-oz = $1.00
Green 1lb 8oz = $4.20

Pink = $3.20 per pound
Blue = (4 oz = 1/4 a pound) $4.00 per pound
Green = (8 oz = 1/2 a pound)(1lb 8 oz = 150% = 1 price + 1/2 of that price to equal $4.20) $2.80 per pound ($2.80 plus 1/2 of $2.80 ($1.40) = $4.20)

Karen should buy the GREEN sprinkles because it costs the least ($2.80) per pound, whereas blue costs $4.00 per pound, and pink costs $3.20 per pound.