This should be fairly easy but I'm double checking all these problems

You invested $5000 between two accounts paying 4% and 9% annual interest, respectively. if the total interest earned for theyear was $350, how much was invested at each rate? $was invested at 4% andwas invested at 9%.

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers