DFC equals 180 because all triangles add up to 180. And their sides are the same so 180/3=60
Answer: 
Step-by-step explanation:
Given
A delivery service charge
for each delivery
and an additional
for each mile traveled
Suppose, x miles are covered
The charge is given by

Therefore, driver traveled 6 miles for delivery
The area of the triangle below is 7.5 units
Answer:
first one is correct................