The cost of hiring a van is partly constant and partly varies with the time spent. It costs 180 naira for a 2 hours hire and 450 naira for a 7 hours
(A)write an equation connecting the cost x with the time t.
B. Find the Cost for 10 hours
A. x = 180 + 270t
B. x = 180 + 270(10) = 1800