At camp last summer the ratio of boys to girls was 3: 5 if there was a total of 160 campers how many girls were there

Given that (x-3) is a factor of f(x)=x^3+ax^2-x-6, find a and hence the number of real roots or the equation f(x)=0

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

Im gonna fail 7th grade selective breeding 1. creates offspring which are genetically identical to the parent 2. is the process of breeding only organisms with desirable traits 3. involves the removal of the nucleus of a cell 4. combines traits from organisms of different species