Aperson goes from a sauna at 115°f to an out side temperature of -30°f. what is the change in temperature?

Whenever you're interested in computing the (absolute) difference between two values of a certain variable, you have to subtract the final value and the initial value. This is often written as delta:

So, in this case, the final temperature is -30°F. The initial temperature is 115°F. So, the variation is

A negative delta indicates that the value decreased, which is our case.

no not all of them.

step-by-step explanation:

some of them have a square base.