Complete the steps to solve the polynomial equation x^3 – 21x = –20. according to the rational root theorem, which number is a potential root of the polynomial?
–7
0
1
3

the answer is 1

Step-by-step explanation:

thats not a system of equations, that is a solution

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