Answer:
see below
Step-by-step explanation:
Part A:
We must be above the freezing point and below the boiling point
Using the variable t for temperature
42<t<176
Part B:
There is an open circle at 42 since it is not equal and an open circle at 176 since is it not equal. There is a line between the open circles to show that the temperature can be between 42 and 176, not including 42 and 176.
Part C
20F is below 42 F so it is outside of the range of temperatures allowed. The researcher cannot conduct the research on this day.
20 <42