Dave and ellen are newly married and living in their first house. the yearly premium on their homeowner's insurance policy is $450 for the coverage they need. their insurance company offers a discount of 6 percent if they install dead-bolt locks on all exterior doors. the couple can also receive a discount of 2 percent if they install smoke detectors on each floor. they have contacted a locksmith who will provide and install dead-bolt locks on the two exterior doors for $50 each. at the local hardware store, smoke detectors cost $7 each, and the new house has two floors. dave and ellen can install them themselves. a. what discount will dave and ellen receive if they install the dead-bolt locks? annual discount for deadbolts b. what discount will dave and ellen receive if they install smoke detectors? annual discount for smoke detectors