Solve the system by any method x+y+z+w=0, 4x-y+4z-w=0, 3x+4y-z+4w=-4, x-2y+3z-w=0

let y equal to

the total fare and x is the mile of taxi ride. so the equation is

y = 0.55x + 1.75

since susie has

$10 to spend for a taxi cab, so he can have

10 = 0.55x +

1.75

x = 15 miles of

taxi ride

so the system of

inequality is

10 < 0.55x +

1.75

x > 2