Q:You can sell 800 vacuums for $100 each. For every one dollar you increase you can sell two fewer vacuums. For example, if you charge $103 you can sell 794= 800-2(3) vacuum cleaners. If you charge 98, you could sell 804= 800 + 2(2) vacuum cleaners. How much should you charge to maximize revenue?

You are on the right track. We can find a linear equation to predict the number of vacuums that will be sold at any given price. At $100 it is 800. At $103, it is 794. Think of this data as two points on a line. The points are (100,800) and (103,794). Find the equation of the line. y=1000-2x. The Revenue generated is the number sold * the price. y is the number sold and x is the price. R=x*y=x*(1000-2x) R(x)=1000x-2x? R'(x)=1000-4x The critical number is when R'=0 == 1000-4x=0 == x=250 So, it looks like we should charge $250 per vacuum. Is this really a maximum? R''(x)=-4. The Second Derivative Test tells us that our value is a maximum. This makes sense. The revenue function is a parabola that opens downward with a vertex at (250,125000), The price is $250 and the revenue is $125000.

Q:Not sure which brand I should bite the bullet on

I okorder , I called up because a buddy of mine actually told me he went into their store and got a discount and got $150 off for calling up. Had it the next day in CT at $949 flat. Definitely would recommend Miele though. Germans always make the best

Q:Please read further to answer question. 10 points for best answerYou are comparing two vacuum cleaners in an appliance store and notice that one israted at 120V, 9 Amp while the other is rated at 120V, 12 Amp.WHY?

Which one carries the highest electrical current? A - The 12 amp one because 12 amp 9 amps! Duh! Which one has the highest resistance? A - The 9 amp one has the higher resistance. R = voltage/current Duh!

Q:What is the difference between a 2200W and 2000W vacuum cleaner?

One is two pair. The other is three of a kind. Three of a kind takes it.

Q:If Jesus was killed by abortion instead of crucifixion, would Christians wear vacuum cleaners or coat hangers?

Wrong again. The Christians will always carry the crucifixion . It is the heathens who will carry the vacuum cleaners and the coathanger, while they march into the eternal fires of hell. There will be many women, men, who will hang by the coathangers over the fire and their screaming and knashing of teeth will never cease. Don't make if's about Jesus. Not funny, when you mock the Bible or Jesus.

Q:What's the Cadillac of vacuum cleaners?

Shop-Vac that is an industrial one and man does it do the trick!! ;)

Q:What's the difference between vacuum and centrifugal dust collection?

In the current vacuum cleaner market, traditional vacuum cleaners and centrifugal vacuum cleaners all occupy a certain market

Q:Hi everyone, I will be buying a new vacuum cleaner soon and would like some recommendations/ testimonials from regular users of vacuums as to which ones you all feel is/are the best. It needs to be one that is good for picking up pet hair, and doing a 3 bedroom house top to bottom, (so will be on for a good while when in use), also the cost needs to be under ?200. many thanks.

hi petunia you wont get better than a hoover model with extra tool for pet hair they are bag-less and filters clean with water. 1600 or 2000watt motor is fine they have an overheat switch which cuts out the motor if it overheats price round about ?70 Richard

Q:anyone know of a car wash that also has vacuum cleaners and such to clean your car out in Winston Salem, N.C.?

Whats wrong with using the one at your home? I use mine to clean my auto interior once a week for 4 o years.

Q:Are Kirby vacuum cleaners worth it?

I couldn't live without my Kirby. It is definitely the best as far as i am concerned. Ive had my Kirby for 18 years. Still runs like a top, but, I recently updated to a newer model.