#### Answer

$378

#### Work Step by Step

To find the amount saved on a 7-night stay at Harrah's in Reno, we first find out what a 7-night stay would have cost at each location. We multiply 45 * 7 = 315 for Reno, and 99 * 7 = 693 for Lake Tahoe. We subtract the two to find the amount she saved: 693 - 315 = $378.