Piper spends a winter day recording the temperature once every three hours for science class. At 9 am, the temperature was -5.8°F. Between 9am and noon, the
temperature increased by 13.7°F. Between noon and 3pm, the temperature rose
15.5°F. Between 3pm and 6pm, the temperature dropped 5.6°F. What was the
temperature at 6pm?

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

where is the graph? need more info

the answer to your question is b.

time is equal to distance over rate so

t = d/r

need a little bit more information for the second question.