Hiking up a mountain, you notice that the air temperature drop 10°C for every 1,00 meters in elevation. The temperature was at 68°F at 2,000 meters in altitude. If the hiker is now at altitude of 5,000 meters, what is the current temperature? Show your work.

you're given a *rate* of decrease and then the *extent* of the "cause". SO the rate is 10C/1000m (right? You understand why this is a rate? You go 1000m up, the temperature drops 10C. And it happens continually, bit by bit, as you climb. That's a rate!

But, you don't stop with climbing just 1000m: you climb 1000m twice *more*. So, how much has the temperature dropped in all, by the end?

You really should be able to put this together as 10C/1000m  x  3000m  = result. It will be in units of (degrees) C.

Now, finish the problem and get down the mountain, before you freeze (also, winds kick up more on mountains -- a double whammy).

Step-by-step explanation:

the answer is  

c.

14,469 cubic feet

i know this one is right

answer: 24

step-by-step explanation:

7x2=14

5x2=10

10+14=24