What is the question? I can't tell by the picture quality.
Answer:
27 years
Step-by-step explanation:
Let Holly's age be h and Aunt's age be a. We can setup 2 equations and solve.
1. 
2. a - 15 = h
We can plug in equation 2 into equation 1 to solve for aunt's age:

Holly's aunt's age is 27
A quadrilateral is a four-sided polygon with four angles.
Given a = 7 and b = 13, this gives us for c:
6 < c < 20, i maybe be wrong
F should be -1, 6
E should be -4, 2
D should be -4, 9