Answer:
B. EF
Step-by-step explanation:
The triangle above is a right triangle, these consist of 2 legs and a hypotenuse. The hypotenuse is always the longest side so EF is the answer.
Answer:
The unit rate is 
Step-by-step explanation:
Let
x ----> the number of feet
y ----> represent the cost of a piece of pipe
we have

Remember that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form
or
In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin
In this problem we have a proportional relationship
The unit rate is the same that the slope of the linear function or the constant of proportionality k
so

therefore
The unit rate is 
Assuming that they are straight lines
remember that a straight line=180 degreese
the line cuts it into 2 pars
1 angle is 35
so the other is 180-35=145
theother half is the same
the angles should be 35,35,145,145
You can use photomath to find that