Answer:
x=-3.5
reason:
first, add 3 to both sides
this makes the equation -1/2x=7
then, divide both sides by -1/2
this will give you x=-3.5
A is 5,6 that is the answer for A gotta go but maybe someone else can help with the other ones
13 units....................YES
Step-by-step explanation:
E3, E6, E11, E7: no solution
E1, E12 : 1 solution
E2, E8, E10 : infinite solutions
The median may stay the same.
The range will always change.
I dont think the last 2 will always change.