Answer:
20 feet
Step-by-step explanation:
13 foot ladder + 7 feet more = 20 feet
multiply all terms in the second equation by 2 to get the coefficient on the y variable to be -6.

81a²-25 would be the answer I'm pretty sure. Hopefully I helped.
Answer:
Hello
Step-by-step explanation:
The domain is limited with 2 lines parallel: -1 ≤ x ≤ 1
and the disk ? (inside of a circle) of center (0,0) and radius 2
