Can someone show me how to do this step by step?

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?

Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6

1/2+1/6-3/4 simplify the given expression leaving the answer in improper fraction form.