Geek University offers 4 math classes, 2 science classes, 3 language classes, and 5 art classes. Mrs. Alexander needs to sign up for exactly one class in each subject. How many different combinations of classes does Mrs. Alexander have to choose from?
please help!

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. find the lateral area for the prism. l.a. = 0123456789