What equation represents the following real-world problem? Cheyenne climbs 468 feet up a mountain. This is 129 feet more than her brother climbs. How high did Cheyenne's brother climb up the mountain? (1 point)
Let's represent the height Cheyenne's brother climbed as x.
According to the problem, Cheyenne climbs 129 feet more than her brother climbs, so we can represent her height climbed as x + 129.
Since she climbed a total of 468 feet, the equation can be written as:
x + 129 = 468