Answer: negative 6
Step-by-step explanation:
Since at the top of the mountain its already 0 and the degrees drop 3 each hour then multiply -3 by 2 hours and there you go.
-3(-4y+3) +7y
Expand
12y-9+7y
Add like terms
19y-9
1.67x[10^(-20)] 1.67x[10^(-24+28)]
--------------------- = -------------------------- =
9.11x[10^(-28)] 9.11
.183315(10^4)=1833.15
The proton mass is about 1833 times an electron mass
Hope this helps!
Here is a graph with the equation you gave graphed on it.