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1. ### Basic funtion, just can't figure out one part

Well, since my new problem relates to basic functions, I figured I'll just reuse to this topic. This isn't exactly homework, but I just have a question. Why does (x^2+1)(x-1)/(x^2 + 1)(x-2) not have a hole in the graph despite having a common factor?
2. ### Basic funtion, just can't figure out one part

ah! Thank you. I feel stupid now. how could i overlook that.
3. ### Basic funtion, just can't figure out one part

The problem is this A cable television firm presently serves 5000 households and charrges 20 dollars per month. A marketing survey indicates that each decrease of 1 dollar in the monthly charge will result in 500 new customers. Let R(x) denote the total monthly revenue when the monthly...
4. ### Inqualities with gas mileage

So basically, the values are numbers between 30 and 45?
5. ### Inqualities with gas mileage

Thank you very much for catching my error.
6. ### Inqualities with gas mileage

Here is the problem I am having trouble with right now. The number of miles M that a certain compact car can travel on 1 gallon of gasoline is related to its speed v (in mi/hr) by M=-1/30v^2+5/2v for 0<v<70 For what sppeds will M be at least 45? I start working the problem like...