Adam's dad takes the parkway to work. it takes him 45 minutes to travel from mile marker 145 where he enters the parkway to his exit at mile marker 98. what is his average speed. i do know it is not d.
a. 193.3
b. 62.7
c.1
d.47

Ineed ! i have no clue how to do this problem.

Temperature is defined as a. the equivalent of heat. b. a measure of the average kinetic energy of the individual atoms or molecules composing a substance. c. how hot or cold it is. d. the total kinetic energy of the atoms or molecules composing a substance. e. none of the above is correct.

How many more valence electrons does sodium need to have a full outer valence shell