given that negative 9i is a 0, factor the following polynomial completely. f(x)=x^4+6x^3+86x^2+486x+405

Afruit stand has to decide what to charge for their produce. they need $10 for 4 apples and 4 oranges. they also need $15 for 6 apples and 6 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?

Find an equation for the linear function which has slope -10 and x-intercept -7

Does the point (1, sqrt 7) lie on circle shown.