Question

7-4|x+7|>-5
is this (negativeinfinity, infinity)?

Answer 1

\[-4|x+7|>-12\] is a start

Answer 2

i did that so far

Answer 3

divide by \(-4\) and change the sense of the inequality to get
\[|x+7|<3\]

Answer 4

that means
\[-3<x+7<3\] and solve for \(x\) by subtracting 7 on all parts

Answer 5

-10,-4

Answer 6

so my teacher was wrong, he told me it was negative infinity, and positive infinity

Answer 7

either you copied the problem wrong, or your teacher is wrong
it is \(-10<x<-4\)

Answer 8

same as satellite 73