11)
3x = 180
x = 60
12)
6x + 18 = 180
6x = 162
x = 27
Yes, because the afternoon rate is just the morning rate split in half. Instead of checking the temperature every hour and a half, the temperature was checked every 45 minutes. And, the temperature rate was also split in half when the time was split in half. So basically, if the 2 degrees every 45 minutes was multiplied by 2,(both the time and the temperature) or if the 4 degrees every 90 minutes was divided by 2, (once again, both the time and the temperature) then, they would both be either 2 degrees every 45 minutes, or they would both be 4 degrees every 90 minutes.
Step-by-step explanation:
Answer:
Step-by-step explanation:
so it's a little hard to tell if they mean
or 
for for answer D but i'll guess that they mean the latter.... also for B... it's often said... incorrectly that you can't take the square of a negative number.. but that's not exactly true. b/c 
= i in the imaginary number world. soooo that said... I think they are assuming that you don't know you could do that.. even thou.. now you do :D but.. B looks like the best choice
