Yes it is a right triangle
The question gives the relationship to be

We will interpolate to solve the question.
First Question: 147 mi

Cross multiplying,
Answer:
Can you put the graphs up then ill edit my answer and give you the answer
Answer:
Her usual rate is 0.8333 miles per hour.
Step-by-step explanation:
The velocity formula is given by:

In which d is the distance and t is the time.
She completed the first half of the walk 1 mi/h faster than usual
Her usual rate is v. 1mph faster is v + 1.
The second half of the walk 2 mi/h slower than the first half.
The first half is v + 1.
2mph slower is v + 1 - 2 = v - 1. Then
Total rate:
7.2 hours, and 6 miles. So
One half is v+1 and the other is v - 1. This is why each is multiplied by 0.5.



Her usual rate is 0.8333 miles per hour.
As we know Conversion from fahrenheit to celsius is

We can write it also as

F as y and C as x then we can write it as