Answer:
About 14 in the exact value is 14.38 smthn
Answer:
Step-by-step expla2nation:
Answer:
It went down 5.5°C a minute.
Step-by-step explanation:
You have to look for the difference of 100 and 78, which is 22.
Divide the difference with the minutes (4), equalling 5.5.
So, the one you picked is correct because:



This eliminates the second option because there is only 1 possible value for a.
The 4th option is also correct because it's saying:

Now, just by pure logic, you can tell that to solve for b, you have to use option 3 because Option 5 has already been used to solve for a.
So, your answers are:
#1, #3, and #4.