How much do it cost one way
Welcome, Carol. Please open Google Maps, put in your Hemet address, then the address here in LA, plot the trip using the bus icon (mass transit). The next page will be your route, the time it takes, and details about it. At the bottom of that box, on the left side of your screen, in blue (meaning click-able), are Riverside Transit Agency and MetroLink Trains. If you click them, you will be taken to their websites, where ticketing and costs will be shared. The trip will take about 3 hours, which is fairly long for mass transit. Your best bet would be a rental car.