Please please please help me

x = -4

Step-by-step explanation:

Square both sides:

The square root and the square will cancel to leave simply the argument within the square root:

-5 - 2x = -1 - x

Now simply isolate the variable x:

x = -5 + 1 = -4

Check to see if x = -4 will work:

This works, so we know that x = -4 is a solution.

Hope this helps!

$25 becasue a 10 increase would make it from 80 to 50