A manufacturer of shower-surrounds has a revenue function of 
and a cost function of 
, where x represents the number of units produced and sold. Find the number of units that must be sold to break even.
Definitions:
Lymphatic Tissue
An essential component of the immune system, consisting of organs and dispersed cells that produce and transport lymphocytes to help fight infection and disease.
Astro
A prefix referring to stars or celestial bodies.
Neo-
A prefix meaning new or modified, often used in medical terms to indicate something newly formed, such as neo-Darwinism or neoplasm.
Carcin/o
A medical prefix denoting relation to cancer.
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