QUESTION $5$

$5\mathrm{.}15\mathrm{.}25\mathrm{.}3$ Find the taxicab distance between the following two points:

$=(4$; $3)=(2$; $2)(2)$

The ambulance call centre receives a report of an accident at $=(4$; $1).$ There are

two ambulances in the area, ambulance $(1$; $2)$ and ambulance $(1$; $1).$

Which ambulance should be sent to the scene of the accident? $(5)$

The owner of three petrol stations at $=(3$; $3),=(4$; $1)=(1$; $3)$

wants to build a car wash at a point $$ which will minimize the sum:

$($; $)+($; $)+($; $)$

a$)$ Where should she build the car wash? b$)$ What will the sum of the distances be$?$