Which expression is equivalent too the expression shown?

e.

step-by-step explanation:

because there are always 10 numbers in a phone number.

i dont know

step-by-step explanation:

no this is a nonlinear negative

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!