Danica conducts a science experiment with a mixture that freezes at temperatures of
-20°F and below. Danica wants to cool this mixture down, but does not want it to
freeze.
⚫ She puts the mixture into a freezer that will lower its temperature by 3.5°F
every hour.
• When she puts the mixture into the freezer, its temperature is 22°F.
Which inequality matches how long, in h hours, Danica could leave this mixture in the
freezer before it starts to freeze?
A 22-3.5h<-20
B 3.5h-22-20
с 22-3.5h>-20
D 22-3.5h2-20