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How fast is the price changing?
The demand equation for rubies at Royal Ruby Retailers is given by the formula below, where q is the number of rubies RRR can sell per week at p dollars per ruby.
q+(4/3)p=70
RRR finds that the demand for its rubies is currently 15 rubies per week and is dropping at a rate of one ruby per week. How fast is the price changing? (Give your answer to the nearest cent.)
Anyone?
2 Answers
- M3Lv 79 years agoFavorite Answer
p = 0.75(70-q) = 52.5 - 0.75q
this is a linear relationship
when q drops by 1/week,
price will rise by $0.75/week
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