Maria drove from Los Angeles (elevation 330 feet) to Death Valley (elevation - 282 feet). What is the difference in elevation between Los Angeles and Death Valley?

612 feet

Step-by-step explanation:

LA is located at 330 feet ABOVE SEA LEVEL

Death Valley is located 282 feet BELOW SEA LEVEL

We let the sea level be at 0 (consider a number line).

So,

LA would be at + 330 feet

and

Death Valley would be at - 282 feet

The elevation change between the two would be the difference:

330 - (-282) = 330 + 282 = 612 feet

The difference in elevation = 612 feet