Can you call anyone with face time (Using it on an iPad to call a cell phone number)?

No, you cannot call a cell phone number directly using FaceTime. FaceTime is designed for video and audio calls between Apple devices, so you can only call someone if they have an Apple device with FaceTime enabled. However, if the person has an Apple ID linked to their device, you can call them using their Apple ID email or phone number associated with FaceTime.