Speed = Distance ÷ Time
Distance = 2797.2
Time = 0.15
2797.2 / 0.15 = 18,648
Speed = 18,648
3 + x/2 = 7
x = (7-3)*2 = 8 = the number
Volume = l x w x h
180 = l (5 x 4)
180 = 20 l
6 = l
That means that the couch will fit, because the length of the van is 6 ft, which is also the length of the couch.
9x^2 and 5x are not like terms because 9x is being squared and 5x isn't.