I'm about to go to bed , but will be up early to finish the homework questions that are giving me trouble, I am listing the problems I need assistance with , just need help on how to start out as most I'm not sure exactly what their asking or where to start. If anyone can help with the following please post and I will be back on in the morning. Thanks so much, I am so excited about finding this web site, it has helped me soooooo much!

* solve for x: (2/x-1)+1= 2/x^2-x

* solve for b: 5b^2-5b+1=0

*Let f(x)= (5/b+5)-(2/b). Find the domain and simplify

*Simplify: (t^2-25/t^2+8t+15)/(t-5/t+9)

*Simplify: (-27)^(1/3)

* Arlene wishes to invest $5000. If she invests part at 7% simple interest, part at 6%, and receives a total of $332 after one year, how much does she invest at each rate?

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