Ahmad drove 845 miles in 13 hours at the same rate how long would it take him to drive 455

set up a proportion comparing miles per hour to miles per hour.  Then cross multiply and solve for the missing term.

845/13  = 455/x

845x = 13(455)

     x = 13(455)/845

     x = 7

7 hours

y > 1/3x

y < = -x + 4

hope this : )