Answer: A proportional relationship needs to pass through the origin and have a linear (straight) slope. Let me know if you need more specifics.
A because the line of symmetry is where the two parts of the image will meet
Answer:
It will take 17.5 minutes to reach 50 degrees F.
Step-by-step explanation:
Current temperature = -13 degrees F
With the engine on, the temperature goes up by 3.6°F per minute.
Let us assume that it takes x minutes to reach 50 degrees F.
So, the time taken will be =

=> 
=> 
x = 17.5 minutes
The expression that tells how much the temperature needs to change from -13°F to 50°F is : 
It will take 17.5 minutes to reach 50 degrees F.
Answer:
-18 1/5-(-2 3/5)=-15 3/5
-52.89-(-25.63)=27.26
-96 2/9- 24 4/9= -120 2/3
49.40-(-85.63)= 135.03