What is the unit rate in mi/min for driving 140 miles in 2 hrs and 45 mins?

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?

The function models the number of accidents per 50 million miles driven as a function

What is the slope of the line shown below?