Finding an irrational number between which given pair of numbers supports the idea that irrational numbers are dense in real numbers?

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

What is the quotient of m^6/5 ÷ 5/m^2? assume m does not equal pl

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)