A salesman drove from his home to a nearby city at an average speed of 40 mi/h. He returned home at an average speed of 50 mi/h. What was his average speed for the entire trip?

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3

Meee i honestly dont know what this question talking about