The family leave home at 9 A. M. At that point, the car's odometer reads 31,247. They drive until 12:30 P. M., when they stop for lunch. At the restaurant, the odometer reads 31,492. What is the unit rate of speed in miles per hour?

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)