Some one help this equation 7 x (3+2) =

Sketch one cycle if the cosine function y=2cos2theta

What is the measure of angle x? answer

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?