Solve the following:
find the point of inflection from f(x)= x^3+x^2+x

What are the domain and range of the function f(x)=2^x+1

What is the distance between (3,k+1) and (2k,k-1)

Maria has $10,000 to invest in two accounts.he decides to invest one part in an account with 5% interest and the rest in an account with 8% interest. at the end of the year he has earned $702,50 in interest.¿how much did maria invest in the 8% account?