PlS HELP BRAINLIESTT IF GOOD

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5

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?

Use circumcenter theorem to solve for the given values