<span>Information is given(reasons are in the parenthesis)
Angle A and angle B are supplementary. Angle B and Angle C are supplementary (given)
DC is parallel to AB (consecutive interior angles are supplementary )
BC is parallel to AD (consecutive interior angles are supplementary)
ABCD is a parallelogram (definition of parallelogram, has to pairs of parallel sides)</span>
1/10 because you will do it 10 times
Answer:
Option A. 
Step-by-step explanation:
step 1
Find the area of the brownie pan
The area of the trapezoid is equal to

step 2
To calculate the number of days, divide the total area of the brownie pan by 30 square centimeters of brownie
so

A) 18
Apparently my answer has to be 20+ characters so this is filling space