To solve this system using the subst. method, equate y = 7x + 8 to y = x + 20.
Then 6x = 12, and x = 2. To find y, subst. 2 for x in either of the given equations.
Write your solution as (2, y).
Is D the answer I think am not that sure I try my best
Seventy five dollars hope this could help[
Answer:

Step-by-step explanation:
The formula to find the area of a trapezoid is the following,

Where (
) represents the heights of the trapezoid, (
) and (
) represent the bases of the trapezoid, or rather the two parallel sides of the trapezoid.
One is given all of these values in the picture,

Substitute these values into the formula and solve for the area of the trapezoid,

Simplify,

We know, area of a parallelogram = b * h
Here b = 14
h = 6
So A = 14 * 6 = 84
In short Your Answer would be 84 Feet²
Hope this helps!