Find expressions for the Revenue, Cost, and Profit from selling x thousand items. Which expression represents revenue? A. R=80000x B. R=8000x C. R=8x+180,000 D. R=8x Which expression represents cost? A. C=8000x180,000x B. C=4480+180,000x C. C=180,0004480x D. C=180,000+4480x Which expression represents profit? A. P=180,0003520x B. P=180,0008000x C. P=80000x180,000 D. P=3520x180,000