A3-pack of light bulbs costs $3.45 . a 4-pack if the same light bulbs costs $4.20 . which pack is the better value .

The ratios 3: 9, 4: 12, 5: 15, and 6: 18 are a pattern of equivalent ratios in the ratio table. which is another ratio in this pattern?

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

Graph the equationy= x+3[tex]y = x + 3[/tex]