Find the value of a in this diagram

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

Which point is a solution to y s 4x + 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?