Final answer:
State regulations on dental x-ray equipment are typically stricter than federal regulations.
Step-by-step explanation:
The statement that is true regarding federal and state regulations on the used of dental x-ray equipment is b) State regulations are more stringent than federal regulations. State regulations on dental x-ray equipment are typically stricter than federal regulations. While federal regulations set minimum standards, states have the authority to impose additional requirements to ensure the safety and well-being of their residents. This allows states to adapt regulations to their specific needs and concerns.