Find the solution to the inequality
2x + 8(x-10) 30

x -2

x 2

x 11

x -5

Question

Find the solution to the inequality
2x + 8(x-10) > 30

x > -2

x > 2

x > 11

x > -5

solomonzelman · Answer

what is your first step? what do you think?

anonymous · Answer

To fill it in. I know how to do this, but each time  I did it I know Im not getting the correct answer

solomonzelman · Answer

Ok, the first step is to

simplify the  '8(x-10)'

anonymous · Answer

I did it by just filling in the x's with each of the numbers

anonymous · Answer

Like first I did 
2x-2+8(-2-10)> 30

And I did that for all of them

solomonzelman · Answer

that is impossible!

solomonzelman · Answer

How can you ever do that, x is not equal to 2 it is more than 2

it is an INEQUALITY.

anonymous · Answer

Idk I just filled in x with the choices

solomonzelman · Answer

Solve, don't plug in the choices, b/c what if you don't get the choices in your question? Would you then plug every possible real number into your equation?

Try to work this equation
$$2x + 8(x-10) > 30$$
$$2x + 8x-80 > 30$$

right? so far so good?

anonymous · Answer

Yea

solomonzelman · Answer

what would you do next?

anonymous · Answer

Idk

solomonzelman · Answer

add 80 to both sides

anonymous · Answer

Okay then what?

solomonzelman · Answer

add 2x+8x

and divide both sides by 10

solomonzelman · Answer

what else are you working on?