You answered would be n is greater or equal to 4 but u have to us that symbol
24=2(w+4)+2w=4w+8, subtract 8 from both sides 4w=16, w=4. L=w+4 so l is 8. The dimensions are 8 by 4.
Distance = rate x time
distance = 60 miles per hour x 7 1/2 hours
distance = 450 miles
