How do I know that l -32 l is greater or less than l 15 l

When it is in between the two rods like that, it is a positive. So, in other words, these two numbers are:

32 and 15

What is more? 35, of course.

35>15

That is how! Hope I helped ya!

i'm assuming that it's c.)   volcanoes built the mountains and earthquakes tore them down.

if you're trying to figure out how much each ounce cost it would be 0.20

cents each ounce