. Which expression is equivalent to 4 – (−7)?

A. 7 + 4
B. 4 – 7
C. −7 – 4
D. −4 + 7

i think it will be zero as slope has a formula of difference between initial and final distance divided by itz time interval

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!