Determine whether the statement is sometimes , always, or never true if ax + b - 4 =b and a = 0 then x = 4/a

Always true if a does not equal zero

Never true if a equals zero

Step-by-step explanation:

ax + b - 4 =b

Subtract b from each side

ax + b-b - 4 =b-b

ax -4 =0

Add 4 to each side

ax =4

Divide each side by a  (a cannot equal zero)

ax/a = 4/a

x = 4/a

they charge the same amount at 20 minutes.

step-by-step explanation: