I'm so sorry for not answer but which grade and what workbook is it?
Answer:
21.4476105895
Step-by-step explanation:
Using a calculator 
Answer:
the answer is X<5/3 correct me if i'm wrong
Step-by-step explanation:
hope this helps
$20/5 is $4, so for every increase in temperature, it's 4 (1°=$4). So 9*4=36. So your answer is B.