what should be the value of k so that the system of equation has a solution? -x+z-t=3
2x+2y-z-7t=1
4x-y-9z-5t=k
3x-y-8z-6t=1

answer: b.

step-by-step explanation:

it is b. cause the equations are put in the right category

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

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two