In the equation below, for what value of c does x = 4?
1 / (2x + 4) = 3x-c

Option D.

Jenn's answer is not correct. She got it substituting into the equation and solving for "x".

Step-by-step explanation:

Given the following equation:

Since you need that , you hace to substitute that value into the equation:

Now you need to solve for "c":

Therefore for a  a value of , you get

Then, the you can identify that the correct answer is the one given in the Option D.

Jenn made a mistake, because she substituted into the equation and then solve for "x":

step-by-step explanation: