A roller coaster climbs 110 feet from ground level then drops 65 feet before climbing another 135 feet. How far does the coaster need to drop or climb to be back at ground level.
To calculate how far the coaster needs to drop or climb to be back at ground level, we need to find the difference between its total ascent and total descent.
Total ascent = 110 feet + 135 feet = 245 feet.
Total descent = 65 feet.
To find how far the coaster needs to drop or climb to be back at ground level, we need to subtract the total descent from the total ascent:
245 feet - 65 feet = <<245-65=180>>180 feet.
Therefore, the coaster needs to drop or climb 180 feet to be back at ground level.
To find out how far the roller coaster needs to drop or climb to be back at ground level, we can calculate the net change in elevation.
The roller coaster climbs 110 feet, so the net change in elevation after this climb is +110 feet.
Then, it drops 65 feet, so the net change in elevation after this drop is -65 feet.
Finally, it climbs another 135 feet, so the net change in elevation after this climb is +135 feet.
To find the total net change in elevation, we add these individual changes:
+110 feet - 65 feet + 135 feet = +180 feet.
Since the net change is positive, it means that the roller coaster needs to climb an additional 180 feet to be back at ground level.