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?
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...
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...