The number of portable CD players you are prepared to supply to a retail outlet every week is given by the formula

q=0.3p^2+5p
where p is the price it offers you. The retail outlet is currently offering you $80 per CD player. If the price it offers decreases at a rate of $1 per week, how will this affect the number you supply?

CD players a week = ???

Question

The number of portable CD players you are prepared to supply to a retail outlet every week is given by the formula

q=0.3p^2+5p
where p is the price it offers you. The retail outlet is currently offering you $80 per CD player. If the price it offers decreases at a rate of $1 per week, how will this affect the number you supply?

CD players a week = ???

anonymous · Answer

i'm assuming q is supply. Just plug in 80 for p.

anonymous · Answer

no its not that simple, these are RELATED RATE problems in calculus, so if you know it please help because i dont know where to start. thanks