Posted by ladybug on .
what does Descartes rule of signs tell you about the possible number of positive real number zeros and the possible number of negative real zeros of the function?
1. f(x)=2x^55x^2+x1
2. f(x)=5x^6+7x^4x6
please show work

college algebraplease help 
Bill,
What percent of the total population is found between the mean and a zscore of 0.50?