I need help with this please

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

Complete the steps to find 4.830 ÷ 5

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?