What input will result in an output of 12 for the following functions d(x) = 2x -4

8

Step-by-step explanation:

12=2x-4

12+4 = 2x

16 = 2x

16/2 =x

x =8

check

d(x) = 2(8)-4

=16-4

=12

answer: 819.89 miles across america

step-by-step explanation:

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