College algebra question. inequalities interval

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SUMMARY

The forum discussion centers on solving a college algebra inequality and expressing the solution in interval notation. The user initially struggled to determine the lower bound of the interval, estimating it to be around -3.98558x10^8. Ultimately, the correct lower bound was identified as -7, leading to the final solution expressed as (-7, 4).

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Homework Statement


Solve the following inequality and express the solution set in interval notation.

http://www.webassign.net/www24/symImages/4/6/aaf987edafbf00c172f8cfaf01966c.gif

The Attempt at a Solution



I got most of the answer right, except the lower interval.

the answer is:

( ? , 4 )

the question is find the ?

it is a negative number like -4x10^8, and I have narrowed it down to somewhere around -3.98558x10^8, but whata ****, how the hell m I supposed to get EXACT number?
 
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haha nevermind sorry guys, I got the aswer already, it was -7..
 

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