I just got this question, -2x+2x""-7. Can someone please tell me what those quotation marks mean?

Question

I just got this question, -2x+2>x""-7.  Can someone please tell me what those quotation marks mean?

anonymous · Answer

certainly not me

anonymous · Answer

to be honest with you i have never seen those kinds of quotation marks

anonymous · Answer

haha x to the 4th derivative but i doubt that with this question

anonymous · Answer

hold on look

anonymous · Answer

it says... Solve the inequality.  Graph the solution set and write it in the interval notation.

anonymous · Answer

it could be the second derivative?

anonymous · Answer

what does that mean.... It says.... Solve the inequality.  Graph the solution set and write it in the interval notation.

myininaya · Answer

so your teacher wrote this?

myininaya · Answer

this is algebra class?

anonymous · Answer

well its not my class, its my sister in laws but shes taking elementary algebra.

myininaya · Answer

online quiz?
how many tries do you get?
this is a  typo i belive 
solve -2x+2>x-7
and see if that's right
add 2x on both sides
2>3x-7
add 7 on both sides
9>3x
divide both sides by 3
3>x
x<3

interval notation (-inf,3)

anonymous · Answer

it is a typo, that is what it is

anonymous · Answer

thats what i got, but yeah im thinking its probably a typo.

anonymous · Answer

yep, i got it right. thanks guys all of you.

myininaya · Answer

np